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ROCKBROS BL-S2 Bicycle Tail Light Smart Auto Brake Sensing Light Waterproof Rear Touch-sensitive Cycling Taillight Vibration Wake-up

ROCKBROS BL-S2 Bicycle Tail Light Smart Auto Brake Sensing Light Waterproof Rear Touch-sensitive Cycling Taillight Vibration Wake-up

Regular price $36.99 USD
Regular price $19.32 USD Sale price $36.99 USD
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Introducing the ROCKBROS BL-S2 Bicycle Tail Light - the ultimate safety companion for your cycling adventures. This innovative taillight features smart auto brake sensing technology, making it easier for you to signal your movements to other riders and vehicles on the road. The touch-sensitive design ensures effortless operation, even while wearing gloves. Plus, with its waterproof construction, you can ride worry-free in any weather condition. The vibration wake-up function ensures that the light automatically turns on when you start your ride, saving you time and hassle. Upgrade your cycling safety with the ROCKBROS BL-S2 Bicycle Tail Light.


  • Brand Name: ROCKBROS
  • Origin: Mainland China
  • Model Number: BL-S2
  • Type: Tail Light
  • Mounting Placement: Seatpost
  • Power Supply: Battery
  • Material: Aluminum alloy casing + PC lampshade + plastic bracket
  • Battery: 400mAh
  • Charging: 5V 200mA(About 2-3 hours for a full charge)
  • Battery life: 10-20.5h
  • Seat rail spacing: For 38-54mm seat post
  • Waterproof rating: IPX6
  • Weight: 30g(Includes saddle bracket)
  • Warranty: 365days
  • Choice: yes
  • semi_Choice: yes




  • Order Processing Time:  1-2 Business Days
  • Order Delivery Time:   10-13 Business Days

Product Features

1.Upgraded touch-sensitive,button-free experience
2.Synchronous mode,ideal for group rides
3.Automatically turn on/off depending on the light intensity and motion
4.Compact and Light weight(30g)
5.Six illumination modes,10-20.5h battery life
6.Seamless aluminum alloy casing, IPX6 waterproof rating
7.Equipped with both seat bow and seat post brackets


Upgraded Touch-sensitive Multifunctional Brake-sensing Tail Light


Parameters & Size

Button-free Experience with a Newly Upgraded Touch-sensitive Switch

Operation instructions:
1. Long press the touch switch on the top of the lampshade: on/off.
2. Single click: flashing mode switch(Single Flash, Double Flash, Diffusion Flash; Steady; Ripple Flash, Random Flash).
3. Double click: Smart/Manual/Synchronous mode switch.

Brake Sensing for a Safety Boost During Night Rides

When braking or slowing down during cycling, the tail light automatically brightens and lasts for 2 seconds.

Synchronous Mode,Ideal for Group Rides

In synchronous mode, when teammates equipped with the same tail light get close, the lights automatically switch to and maintain the same frequency of illumination.

Light-sensitive Smart Mode for Day-night Recognition.

Stationary Sleep; Vibration Auto-start

In Smart Mode, the tail light goes into sleep mode after 2 minutes of inactivity.

Six Illumination Modes

Convenient 400mAh Type-C charging

Check the remaining battery with the side ring light.

Water Ripple-shaped Lampshade

Custom-designed by ROCKBROS, the water ripple lampshade refracts light multiple times, creating a mesmerizing pattern for both aesthetics and safety.

Two Installation Options, No Picky Bottom Tube

Equipped with both seat bow and seat post brackets.

Seamless Aluminum Alloy Casing, IPX6 Waterproof Rating

The button-free design further enhances the sealing.

Accessory Display

Package Presentation


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