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D21 Smart Bluetooth Watch for Android iOS

173192704

Sleep Monitoring Heart Rate Monitor Sedentary Alert Calorie Burning Distance Measurement for Sports

Discount : 29% OFF
Additional Purchase Deal: For any Item Total over 25.00, purchase 1 Special Promo Item for 0.99,3.99,5.99,9.99, Discounts are automatically applied to your shopping cart before checkout. View Promo >>
$17.09
QTY: - +

Color:

to United States  Via Flat Rate Shipping
    • Description
    • Product FAQ
    • Customer Reviews
    • Shipping & Payment
    • Wholesale Inquiry

    Main Features:
    nRF51822 chip and Bluetooth 4.0 technology: Adopt nRF51822 chip and Bluetooth 4.0 technology that it can quickly and efficiently meet the needs of your life.
    Heart rate monitor: Give you the accurate real-time feedback, let you keep fit easily.
    Sleep monitor / Sedentary reminder / Pedometer: Take care of your health, monitor your sleep, remind you to have a rest and track your sports.
    Distance measurement: Measure your daily walking distance precisely.
    Calorie consumption management: Calculate the consumption of calorie, record the daily burned calorie.
    Call / SMS reminder: When a call or message is coming, you can check it without taking out of your mobile phone.

    Specification

    Hardware

    Built-in chip type: NRF51822
    Bluetooth Version: Bluetooth 4.0
    Waterproof: Yes
    IP rating: Life water resistance

    Functions

    Bluetooth calling: Phone call reminder
    Messaging: Message reminder
    Health tracker: Heart rate monitor,Pedometer,Sedentary reminder,Sleep monitor
    Alert type: Ring,Vibration
    Other Function: Alarm

    Screen

    Screen: OLED
    Screen resolution: 64 x 48
    Screen size: 0.66 inch
    Operating mode: Touch Screen

    Battery

    Type of battery: Polymer battery
    Battery Capacity: 80mAh
    Charging Time: About 60mins
    Standby time: 3-4 days

    General

    People: Female table,Male table

    Dial and Band

    Shape of the dial: Rectangle
    Case material: Stainless Steel
    Band material: Silicone

    Features

    Compatible OS: Android,IOS
    Compatability: Android 4.3, iOS 7.0 and above system
    Language: English,Simplified Chinese,Traditional Chinese
    Available Color: Black,Pink,Purple,White

    Weight and Size

    Dial size: 4.53 x 2.40 x 1.23 cm / 1.78 x 0.94 x 0.48 inches
    Band size: 12.50 x 0.95 cm / 4.92 x 0.37 inches
    Product size (L x W x H): 12.50 x 2.40 x 1.23 cm / 4.92 x 0.94 x 0.48 inches
    Package size (L x W x H): 15.40 x 8.80 x 3.10 cm / 6.06 x 3.46 x 1.22 inches
    Product weight: 0.030 kg
    Package weight: 0.164 kg

    Package Contents

    Package Contents: 1 x Smart Watch, 1 x Chinese and English Manual, 1 x Charging Clip

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports

    D21 Smart Bracelet Watch Bluetooth 4.0 SMS Reminder Sleep Tracker Calorie Burning Incoming Call Show for Sports


    FAQ for Smart Watch and Wristband
    1. Q: I can’t charge my watch / bracelet and it doesn’t power on, what should I do?
    A: If this is the first time you’ve charged your watch / bracelet, please use the adapter to power it, charge it for more than 3 hours, then press the button to start it;
    If you have not used the watch / bracelet for a long time without charging it, the battery would have opened the UVP function. In this situation, you need to activate the battery before using. (You can go to the phone repair shop to activate the battery).

    2. Q: Why can’t I connect with Bluetooth?
    A: 1. If the phone's Bluetooth version is lower than the watch's / bracelet’s, they will
    not be able to pair;
    2. If the phone's Bluetooth version is equal to or higher than the watch's / bracelet’s, but is initially unable to pair, then you need to clear the Bluetooth connection history on the phone, scan and re-connect again.

    3. Q: The watch / bracelet icon shows that it has paired over Bluetooth, however the APP cannot sync data. How do I resolve this?
    A: Generally it is caused by the Bluetooth of the phone. Please close the APP first, restart the Bluetooth connection and re-pair the two devices. If the above step does not work, please restart your phone and try to pair the devices again.

    4. Q: Why does my watch / bracelet frequently lose connection with my phone?
    A: Please check if your phone or other security software has set the APP as a trusted APP or not. This is required to pair the two devices. If it hasn’t, please set it as trusted APP and try again.

    5. Q: Why am I unable to connect with the APP?
    A: Please making sure the OS of your phone is within the range that the smart watch / bracelet supports.

    Guess you like

      FAQ for D21 Smart Bluetooth Watch for Android iOS

      Why the pedometer does not count steps when I have already started walking

      To reduce errors, smart watch usually sets an initial value of 10, it will count steps when we walk more than 10 steps. The APP will show the real walking steps and start counting from step 10.

      What functions can be used when Bluetooth is off

      Usually pedometer, sleep monitor, alarm and heart rate monitor still can be used without connecting to Bluetooth. Calling reminder, remote camera, find phone need Bluetooth connection.

      What application is used when connecting to a smart phone

      The app is designed by the supplier. You can scan the QR code on the package or manual to download it when you get the item.

      Can other watch interfaces be downloaded on the smart watch

      Other watch interfaces or themes cannot be downloaded, it only supports its own interfaces. Long press the watch's screen to switch interface.

      What can I do if Bluetooth cannot connect

      1. Make sure your phone Bluetooth and operative system are within the range that the smart watch supports. 2. Check the phone Bluetooth connection recording, clear it if there are too many recordings, then reconnect it; 3. Check whether the smart watch has enough battery, put it as close as possible to the phone, less than 10 meters.

      What type of battery is normally used in smart watches? Is it rechargeable or not

      The smart watch comes with built-in lithium ion battery which is rechargeable.

      Why my new device cannot boot or start up properly

      Please charge your new device for at least 10 minutes or more before first usage; this ensures normal device boot and optimal operation. For devices with removable batteries, ensure they are properly installed before charging.

      How to switch languages? Can some other language package be downloaded

      You can switch the language in the “settings”, other language packs cannot be downloaded because it only supports the configured languages.

      Can this item be shipped to my country

      We can deliver orders to most countries. For a detailed explanation about each shipping method, destination and approximate delivery time, please check our website: http://www.gearbest.com/about/shipping-methods.html

      Customer Questions & Answers

      • All (34)
      • Product information (0)
      • Stock status (0)
      • Payment (0)
      • About shipping (0)
      • Others (0)
      • Q

        hi, will it measure HR while doing pilates or HIIT, not only when running and/ or walking?

        By Anja Apr-17/2017 11:04:25

        A

        Hello Anja,
        When you measure your heart rate,you need to keep in a stationary state.If you have been exercising,you may not be able to test or test inaccurately.

      • Q

        The bracelet give you the heart rate? Or do you need a separate band?

        By fernando Feb-15/2017 02:02:55

        A

        Hello fernando


        Thank you for your inquiry.

        You do not need a separate band.

        It supports hear rate function.

        Thank you, Let me know if you need any help.

        Have a nice day!


      • Q

        is this wristband compatible with endomondo? Thank you

        By Miroslav Feb-10/2017 04:02:52

        A

        Hello Customer,

        The answer is no.

      • Q

        can it track count calories?

        By giorgi laluashvili Jan-15/2017 02:01:09

        A

        Hello giorgi,
        • Calorie consumption management: Calculate the consumption of calorie, record the daily burned calorie.

      • Q

        If the wristbands are changeable where can I buy others of other colors?

        By João Matos Dec-21/2016 03:12:24

        A

        Hello João,
        Battery: 3.7V 500mAh ( built-in )

        Thanks for your inquiry.


      • Q

        Is it compatible with windows 10 mobile? Can i Download the apk from windows store

        By Rodrigo Damaso Dec-14/2016 06:12:32

        A

        Hello Rodrigo,


        Sorry. It does not compatible with Windows 10, it supports Android 4.3, iOS 7.0 and above system.

        Thanks for your inquiry.

      • Q

        Is the software upgradable? Currently the watch cannot display international characters so some notifications are not readable or messed up, if they contain i e Swedish characters åäö ÅÄÖ

        By Klas Dec-08/2016 10:12:18

        A

        Hi Klas,


        Thanks for your inquiry.

        The software cannot upgradable.

        Have a nice day!

      • Q

        is it compatible with windows phone? Has the bracelet also chronometer ? Thank you

        By Paolo Nov-12/2016 04:11:00

        A

        Hello Paolo,

        Yes, the item is compatible with windows phone.

        The item also have chronometer.

      • Q

        Buongiorno, è possibile veder il numero dei passi e la frequenza cardiaca nel display del bracciale senza dover aver il cellulare a presso?

        By Vale Nov-08/2016 04:11:40

        A

        Hello Vale,
        You can only see the data on the APP, can not see it on the Bracelet Watch.

      • Q

        1- How to make it track sleep? 2- How to turn off notification at night? It wakes me up at night by vibration every time i receive an email or msg or call. Other bracelets has the feature to turn on sleep mood so it stops the notifications. 3- How to make it light up only when I touch the screen not every time i move my wrist?

        By viviane Oct-25/2016 03:10:46

        A

        Hello viviane,


        Thank you for your inquiry.

        1, open the bracelet sleep detection function, wearing the watch during sleep.You can see sleep detection data in the mobile phone APP next day.

        2, set the APP side to close the message alert on it, or directly close the phone Bluetooth, hand ring and mobile phone will be disconnected, you will not receive a message alert;

        3, this bracelet does not have lift the wrist bright screen function, the screen will not always bright, if you do not touch the screen, do not carry out any operation, the bracelet will automatically enter the standby state.

        Have a nice day!

      Prev 1 234Go To: GO

      34 Questions & AnswersView All Ask a question

      Customer Reviews

      Overall Customer Rating:

      4.7 Base on 15 Customer Reviews

      Share your thoughts with other customersWrite a review

      • All (15)
      • Photos (3)
      • Videos (4)
      Sort by: Hot
      • Hot
      • Most helpful
      • Most recent
      • Barbara
        Human
        Pros:
        It was easy to set up on my phone, I liked the app that came with it. It was good quality and fit comfortably.
        Cons:
        The battery life wasn\'t as long as I would have liked.

        Oct 29,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Mauro Galante
        mr
        Pros:
        good built quality
        Big touch screen
        Strong and soft silicon
        Many functions
        Cons:
        none

        Aug 31,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • carlos bonilla
        D21 Bluetooth 4.0 Smart Bracelet Watch
        Pros:
        básico pero buen smart watch. contento por su funcionalidad
        Cons:
        problemas con el app, pero nada del otro mundo

        Oct 06,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • TE
        Review
        Pros:
        the color is beautiful. the material is strong and flexible.
        Cons:
        the app is slow and poorly made

        Feb 10,2017

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Tomáš
        D21 Bluetooth 4.0 Smart Bracelet Watch
        Pros:
        Vše v pořádku. Jsem spokojen s produktem................
        Cons:
        Zatím nemám nic proti....................................

        Mar 26,2017

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Olukunle
        Positive Gearbest Order Review.
        Pros:
        I am proud to become a great customer of Gearbest because they sell great guaranteed products with secure checkout options and awesome reliable safe shipping without delay or damage. I recommend Gearbest to anyone who is willing to purchase good products with great values.
        Cons:
        N/A

        May 12,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

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        Overall Rating

      • Toader
        good
        Pros:
        nice watch, nice color, looks great on the hand
        Cons:
        nothing

        Nov 26,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Fredrik Gren
        Average smartband with some nice features
        Pros:
        Real time HR-monitor
        Text notifications from your phone (sms, contact name etc)
        Cons:
        Battery time
        Not so exact step counting
        A bit buggy app (android) that doesn\'t work with other apps notification etc.

        Oct 16,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Ionut
        D21 Bluetooth 4.0 Smart Bracelet
        Pros:
        D21 Bluetooth 4.0 Smart Bracelet
        Cons:
        Battery would be nice to last a little bit longer

        Sep 12,2016

        Is this helpful?Yes (1)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Marin
        D21 Bluetooth 4.0 Heart Rate Monitor Smart Bracelet Watch
        Pros:
        D21 Bluetooth 4.0 Heart Rate Monitor Smart Bracelet Watch
        Cool
        Easy to use

        Practical
        Honest price
        Cons:
        none

        Jul 29,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

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        Overall Rating

      Prev 1 2Go To: GO

      • Fredrik Gren
        Average smartband with some nice features
        Pros:
        Real time HR-monitor
        Text notifications from your phone (sms, contact name etc)

        Cons:
        Battery time
        Not so exact step counting
        A bit buggy app (android) that doesn\'t work with other apps notification etc.

        Oct 16,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • carlos bonilla
        D21 Bluetooth 4.0 Smart Bracelet Watch
        Pros:
        básico pero buen smart watch. contento por su funcionalidad

        Cons:
        problemas con el app, pero nada del otro mundo

        Oct 06,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Olukunle
        Positive Gearbest Order Review.
        Pros:
        I am proud to become a great customer of Gearbest because they sell great guaranteed products with secure checkout options and awesome reliable safe shipping without delay or damage. I recommend Gearbest to anyone who is willing to purchase good products with great values.

        Cons:
        N/A

        May 12,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Tomáš
        D21 Bluetooth 4.0 Smart Bracelet Watch
        Pros:
        Vše v pořádku. Jsem spokojen s produktem................

        Cons:
        Zatím nemám nic proti....................................

        Mar 26,2017

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • carlos bonilla
        D21 Bluetooth 4.0 Smart Bracelet Watch
        Pros:
        básico pero buen smart watch. contento por su funcionalidad

        Cons:
        problemas con el app, pero nada del otro mundo

        Oct 06,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • Olukunle
        Positive Gearbest Order Review.
        Pros:
        I am proud to become a great customer of Gearbest because they sell great guaranteed products with secure checkout options and awesome reliable safe shipping without delay or damage. I recommend Gearbest to anyone who is willing to purchase good products with great values.

        Cons:
        N/A

        May 12,2016

        Is this helpful?Yes (0)No (0)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      • VladPiero
        Dfit - D21 Fitness Band
        Pros:
        * Excellent built quality
        * Big touch screen
        * Strong and soft silicon band
        * Many functions

        Cons:
        * Perhaps a bit expensive

        Apr 29,2016

        Is this helpful?Yes (1)No (1)

        Price

        Ease of Use

        Build Quality

        Usefulness

        Overall Rating

      Shipping & Payment

      Shipping

      There are two key factors which will affect the time you receive your items.

      1
      Item processing time
      After confirming your payment, we usually ship products out within 24 business hours. However, sometimes due to large transaction volumes or other order issues, we may require up to 3 working days to process orders. You will receive a notification email as soon as your product(s) have been dispatched.
      2
      Shipping methods
      China Warehouse:
      Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
      Unregistered Air Mail or Registered Air Mail United States 0% 20.8% 60.9% 5.13% 19.2
      Spain, United Kingdom, Italy, Germany, France & Portugal 1.62% 41.09% 43.26% 5.71% 19.9
      Netherlands, Greece, Poland 5.59% 44.44% 35.84% 13.00% 18.76
      Russia 0% 11.20% 68.50% 15.80% 24.6
      Japan, Korea 0% 21.30% 68.80% 9.66% 15.95
      Brazil 0% 0.00% 17.96% 54.14% 38.6
      Thailand, Singapore & Malaysia 0% 15.50% 45.75% 21.36% 19.03
      Other countries 0.73% 40.41% 49.93% 8.92% 20.28
      Priority Line United States 49.90% 46.30% 0.93% 0.06% 8.3
      Spain, United Kingdom, Italy, Germany, France & Portugal 5.55% 74% 19% 0.38% 10.8
      Russia 0% 0.75% 88.30% 9.05% 20.04
      Australia 7.67% 86.60% 5.68% 0% 11
      Korea 77.01% 21.40% 1% 0% 5.6
      Japan 95.80% 2.09% 0% 0% 5.4
      Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8
      Other countries 40.75% 49.96% 5.13% 0% 10
      Expedited Shipping ALL countries(EMS) 39.85% 50.09% 8.96% 0% 9
      ALL countries(DHL) 90.15% 9.84% 0% 0% 4.48
      EU Warehouse: Typically 3-5 days to the UK, 3-7 days to other European countries.
      USA Warehouse:Generally, 3-7 days to a USA address.
      ES Warehouse:Generally, 2-5 days to the Spain, 3-7 days to the Portugal.
      Shipping from warehouse nearest to shipping address is faster. Additional charges may apply.
      Note:This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control.

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      Gearbest.com accepts PayPal,Credit Cards,Wire Transfer and Westem Union as secure payment methods.

      1
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      For orders which exceed $1,500,please contact us at support@gearbest.com.
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        Stock in: China

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        Please note: the standard and expedited shipping costs are only estimates; the actual shipping price will be shown on the order page.