ROCKBROS Bicycle Smart Brake Sensing Light Auto Start/Stop IPx6 Waterproof LED Charging Cycling Taillight Bike Light Accessories

(20 customer reviews)

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only for saddleonly for seatpostsaddle and seatpost

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SKU: 4000074337087 Category:


Product details:


1.Full 6061 Aluminium alloy chassis.
2.Automatically turn on/off depending on the light intensity and motion.
3.Automatically switch to sleep mode to save power.
4.Seat rail mounting
5.Three flash modes.
6.20hrs+ run time.
7.400mAh Li-ion re-chargeable battery.
8.USB charging.
9.Battery indicator ( flashes every 6 seconds)
10.Compact and Light weight design (55g).
11.IPx6 Water proof.
Smart light sensing

Automatically stops during day time and starts at night

  • COB LED +Ensca lens
  • High visibility at night but not dazzling

  • Brake Sensing-Integrated Accelerometer
  • Q5 comes with a built-in accelerometer/ high performance MCU and powers by the three-level digital filter algorithm which ensure correct detecting a brake
  • Motion Sensing
  • Automatically turn on/off depending on the light intensity and motion

Battery indicator
The indicator light flashes every 6 seconds, prompting the current battery

IPX6 Waterproof Design

Proper to any abusive environment

Compact and Lightweight design

Easy access

Single Click: Switch between the three flash modes

Press down for 1s: turn off,Press down for over 6s: Reset

Full CNC Aluminium Alloy Chassis

Over 42 CNC processes to make black high-hardness aluminum alloy shell

Easy installation
You can choose install to saddle or seatpost

Additional information

Brand Name


Model Number




Mounting Placement


Power Supply


Install method

Saddle / Seatpost


Aprox 55g (include holder)

Physical size

40*34*34 mm


60 Lumen

Smart Sensor

Brake/Motion/Light Sensing


400mAh Li-ion re-chargeable battery

20 reviews for ROCKBROS Bicycle Smart Brake Sensing Light Auto Start/Stop IPx6 Waterproof LED Charging Cycling Taillight Bike Light Accessories

  1. B***v

    Beautiful product. Holds to the saddle good. I recomend it.

  2. H***k


  3. L***a

    To Polish happened in 13dni. Well packed, wyglada OK. Nietestowane in bicycle, but the movement hand home works wedlug description.

  4. A***o

    Good furniture material, good furniture to light, good furniture to GRIP, foremost perfect. ARRIVED IN 15 days to LIMA PERU

  5. V***i

    Good product good workmanship

  6. B***l

    It’s aluminum. It lights up super well and the induction brake thing is true. 100% recommended. Very subtle and under the Sillin if you forget to remove it you can’t see. Very good store!

  7. G***o

    In Kharkov the lantern came in 31 days. The quality is excellent. Came fully charged. The brake sensor works, checked with your hand. How to charge until I know. While the lantern is satisfied. Thank you store!!!! I recommend it to purchase.

  8. R***a

    Fast shipping, product matches purchased, now to test the product, in wrapping opening, quality is appreciated in terminations, plus excellent lighting quality.

  9. A***v

    Excellent tail light. From China to Donetsk drove for about a month. Quality goods, all these functions work. Completely satisfied! the only thing that was slightly upset is the lack of any protection: the packaging with a lantern was simply embedded in a cardboard box. And so everything is cool!

  10. S***s

    Excellent flashlight, all modes work fine, really reacts to braking, the store sociable and very quickly reacts to questions, thank you!

  11. A***c

    Great and beautiful light. Fit perfect under the saddle. Brake sensor are good and have bright light. Package arrived in Croatia in two and half weeks. Rockbros have great product lane. I’ve ordered light bundle and electric horn, and they gave to me cheaper price and two gifts. Definitely recommend the store.

  12. Customer

    It arrived very fast. The parcel arrived in 10 days. It was of good quality. Thank you.

  13. L***z

    Perfect rear lamp!

  14. M***v

    The lantern came packed in a box and a doll. Without damage. Made neatly. In the Mount turns tight. From shaking does not twist. It burns brightly, it reacts to the slowdown.

  15. V***a

    Hello everyone, the goods came very quickly All as in the photo.

  16. M***v

    Just a rocket gun! Super quality! As for me, this is the most beautiful rear headlight that is on Ali. In short, I’m happy. Everything corresponds to the description. And the quality of the headlight, the packaging was pleasantly surprised! Happy as an elephant! I ordered with two mounts for my money this is a Topchik! I bought a bunch of accessories from them all super in quality!

  17. S***z

    Something was delayed, but it came! I still don’t test. Later I will valorate its operation

  18. R***Z

    Thank you very much. It came in excellent condition, though a little wrinkled the box. The arrival of the package to the country was much faster than indicated, however, the Costa Rican post company was too slow and deficient for delivery of the package within the country. Definitely a Third World company, versus companies with logistics worldwide.

  19. K***R

    So as the description

  20. K***g

    Fast shipping. Reliable quality. Cheap price. Perfect

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