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W8 Smart Watch Men Women Waterproof Bluetooth Fitness Tracker Heart Rate Blood Pressure Fitness Tracker Bracelet
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W8 Smart Watch Men Women Waterproof Bluetooth Fitness Tracker Heart Rate Blood Pressure Fitness Tracker Bracelet

- Black

15.89 $21.99 28% OFF
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Main Features

Main screen: 1.3" TFT 240*240
Battery type: Lithium-ion battery
Battery capacity: 170mAh
Standby time: 5-7 days
Normal usage time: about 3-5 days
Charging time: about 2 hours
Alert Type: Vibration

Pedometer: support
24h/12h time format selection: support
Calories: Support
Sleep monitoring: support
Heart rate: support
Alarm: support
Continuous heart rate monitoring: support
Sedentary reminder: support
Blood pressure: support
Stopwatch: support
Sports mode: support
Finding a Bracelet: Support
UI selection: support
Music Control: Support
"Call, SMS, WeChat, QQ, skype, whatsapp, facebook, linkedin, twitter, viber, line notification reminder": support
Vibration photography: support
"Do Not Disturb Mode (22:00-8:00 The bracelet stops receiving notifications, and the function of raising your hand to brighten the screen is invalid)": Supported
Find a Phone: Support
Factory reset: support
- The bracelet is an international version, only in English, but the message content will be synchronized with the phone language (supports English, French, German, Japanese, Spanish, Italian, Russian, Czech, Portuguese, Turkish)
- The bracelet should not touch hot water because there is water vapor in hot water.

Package Contents:
1 x smart bracelet, 1 x charger, 1 x English user manual

For the problem that the bracelet can measure the heart rate on objects and in the air, the following explanations are given:
1. The main heart rate bracelets currently on the market all use the same measurement method. The principle is not complicated, that is, the PMG signal of the radial artery is obtained by the reflection photoelectric measurement method, the fast Fourier transform is performed on the PPG signal, and the frequency domain is analyzed. Realize human heart rate detection. In short, it uses light on the arteries and reflects it back. According to the change of reflected light, the heart rate of the human body is calculated.
2. Due to many factors such as the physiological structure of the human body, the color of muscles and blood, green light is the color with the highest passing rate of the human body. Therefore, the heart rate sensor light source uses green light to achieve minimal loss and interference.
3. Heart rate bracelet detection focuses on human tissue. The data of some non-human objects is also read. This is a known normal phenomenon. After the data is based on the principle of light reflection, the heart rate detection will have a reading. This situation cannot be completely avoided, so in the case of the "air test", there will be problems with the heart rate data in the case of the heart rate bracelet (watch).

Why choose us?
[Color screen three interfaces] Full touch screen, easy to operate, responsive, the color screen sunlight is clearly visible, the bracelet has two main interface options.
[3 sports modes] Support 3 sports modes: cycling, running and climbing
【More Features】Fitness tracker supports more accurate heart rate monitoring, distance, weather forecast, speed, calories, sleep monitoring, text messages, SNS messages, sedentary reminders, incoming calls, alarm clocks, scheduling, remote shutter, checking your phone, etc. You can read messages on fitness tracker from Facebook, Sapp, Instagram, Twitter, Line, etc.
【Wide Compatibility】The app supports most Bluetooth 4.1 smartphones, supported systems: iOS 8.0 or above, Android 4.4 or above


Waterproof Grade
Life Waterproof
Screen Type
Color LCD
Screen Style
Band Detachable
Fitness Tracker,Sleep Tracker,Message Reminder,Passometer,Call Reminder
Touch Screen
All Compatible
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