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BK400 Waterproof USB Charging Bicycle Tail Light
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BK400 Waterproof USB Charging Bicycle Tail Light

- Black and red

BK400 BikeTail Light
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    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: Mar 06 - Mar 08, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
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Main Features:
● High-quality light beam, high brightness, providing you a clear view of dark night and warning other people
● Made of aluminum alloy and ABS materials, feel comfortable, to prevent the car from scratch
● Easy operation: short press to turn on and change modes, fast double-press to change between brightness mode and strobe mode
● Max 100lm COB LED light bead, IPX8 waterproof, shining even on rainy dark night, keeping you safe
● Easy installation and disassembly, fit for 1.2 - 3.2cm diameter tube

- Mode and working time: high brightness for 3 hours, middle brightness for 5 hours, low brightness for 8 hours, fast strobe for 4 hours, less fast strobe for 6 hours and slow strobe for 8 hours
- Battery: 500mAh Li-polymer battery ( included in product )
- Charging time: 3 - 4 hours
- Charging: USB charging with Micro USB port



Type: Tail Light
Suitable for: Mountain Bicycle,Road Bike,Touring Bicycle

Basic Information

Product weight: 0.0320 kg
Package weight: 0.0790 kg
Product Dimension: 6.00 x 3.00 x 3.00 cm / 2.36 x 1.18 x 1.18 inches
Package Dimension: 9.00 x 7.00 x 5.00 cm / 3.54 x 2.76 x 1.97 inches


Package Contents: 1 x Tail Light, 1 x USB Cable, 1 x Silicone Buckle
BK400 Multifunctional Waterproof USB Charging Tail Light Bike Safety Lamp- Black and red
BK400 Multifunctional Waterproof USB Charging Tail Light Bike Safety Lamp- Black and red
BK400 Multifunctional Waterproof USB Charging Tail Light Bike Safety Lamp- Black and red
BK400 Multifunctional Waterproof USB Charging Tail Light Bike Safety Lamp- Black and red
BK400 Multifunctional Waterproof USB Charging Tail Light Bike Safety Lamp- Black and red
BK400 Multifunctional Waterproof USB Charging Tail Light Bike Safety Lamp- Black and red

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Customer Reviews

4.8 out of 5
  • 4
  • 1
  • 0
  • 0
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See all 5 reviews Write a Review
  • NostramoV
    Yes (0) Color: Black and red
    Nice tail light
    Well, it’s job is just so that other could see you in the dark, and to that end, it does its’ job just fine.

    There are 3 settings, slow blink, rapid blink, and floating lights.

    Charging with USB, and there’s a cover for it, so it’s relatively water resistant.

    Fits well on both BMX and MTB.

    Jan 07,2019

  • andrzej
    Yes (0) Color: Black and red
    veri good bike light
    Well made, very bright, plenty of modes and an unbeatable price. Everything I was looking for in a tail light. Super pleased, would definitely recommend this product.

    Sep 25,2018

  • Enthusiast
    Yes (0) Color: Black and red
    Very good item
    Very good overall.
    3 mode light one of which is really strong.
    Build-in battery and lasts for some time.
    Ease to mount.

    Definitely recommend this one!

    Feb 26,2019

  • Сергей
    Yes (0) Color: Black and red
    Вело фонарь
    Доставили за две недели;
    Очень яркий,
    Есть режимы мигающие, есть просто светящие.
    Не нашел пока

    Jun 15,2018

    Yes (0) Color: Black and red
    just wow
    verry bright
    best i ever had
    decent battery life

    Nov 29,2018

FAQ for BK400 Waterproof USB Charging Bicycle Tail Light

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

Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
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 0.52% 44.87% 49.88% 3.5% 18.13
Spain, United Kingdom, Italy, Germany, France & Portugal 5.18% 43.44% 48.34% 1.17% 15
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 2.96% 40.34% 52.54% 3.74% 18.66
Russia 0% 4.45% 84.41% 11.1% 28
Japan, Korea 0% 21.30% 68.80% 9.66% 17.75
Brazil 0% 0% 23.91% 72.09% 38.6
Turkey 0% 37.75% 59.05% 3.1% 20.33
Thailand, Singapore & Malaysia 0% 40.39% 56.12% 2.6% 16.2
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 12.28% 79.05% 7.4% 0.52% 11.75
Spain, United Kingdom, Italy, Germany, France & Portugal 8.44% 66.56% 23.45% 0.45% 13.55
Russia 0% 3.48% 75.79% 20.04% 31
Brazil 2.21% 6% 61.29% 25.46% 30
Turkey 20.42% 77% 3% 0.08% 10
Australia 7.67% 86.60% 5.68% 0% 11
Korea 97.54% 1.57% 0.89% 0% 7
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
GW 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. Generally speaking, we offer free shipping for BK400 Waterproof USB Charging Bicycle Tail Light to United States (US, USA), United Kingdom (UK, GB), Germany, Italy, France, Spain, Portugal, Poland, Brazil, Russia, Japan, Greece, Austria, Hungary, Slovakia, Czech Republic, Ireland, Lithuania, Israel, Denmark, Norway, Sweden, Canada, Australia, Netherlands, Korea, Turkey, Mexico, Ukraine, Romania, Columbia, Thailand, Singapore, Malaysia etc. Please choose the shipping methods for the final price.

Payment accepts PayPal,Credit Cards,Wire Transfer,Westem Union, YandexMoney,Webmoney,Boleto,OXXO and BKM as secure payment methods.

The most convenient payment method in the world.
Wire transfer
For orders which exceed $1,500,please contact us at
Note: please email us the order number,the amount transferred along with currency type,and the exact date of the wire transfer.
Western Union
Please contact us at for details.
Note: please email us the following information after you have paid via Westem Union:
· Control Number(10 digits)
· The exact amount sent along with the currency
· Name of sender.
· Address of sender
YandexMoney、 Webmoney
With YandexMoney and Webmoney, it is convenient and safe for you to pay via credit card、wallet or cash
For Brazil customers, we accept Boleto: you only need to fill in the payment information, remember your Boleto Voucher information and pay it within 3 days at any Boleto stores.
For Mexico customers, we accept OXXO: you can choose OXXO payment on our website, and then remember your OXXO Voucher information and pay it within 3 days at any OXXO stores.

Do you want to bulk buy ? Please submit your wholesale inquiry below. Please note we usually don’t offer free shipping on wholesale orders, but the wholesale price will be a big bargain.

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