ROCKBROS Bike Rear Light Smart Auto Bicycle Brake Light

(11 customer reviews)


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ROCKBROS Bike Rear Light Smart Auto Bicycle Brake Light

Product Details:


  • Full 6061 Aluminium alloy chassis.
  • Automatically turn on/off depending on the light intensity and motion.
  • Automatically switch to sleep mode to save power.
  • Seat rail mounting
  • 4 flash modes.
  • 20hrs+ run time.
  • 400mAh Li-ion rechargeable battery.
  • USB charging.
  • Battery indicator ( flashes every 6 seconds)
  • Compact and Lightweight design (55g).
  • IPx6 Waterproof.

About Charging

Please use the charging cable included in the package to charge, otherwise, it may cause damage to the lights

Product Information:


Smart Light Sensing

Using a highly sensitive smart sensor chip
Able to correctly detect vibration and braking action


COB LED +Ensca lens

High visibility at night but not dazzling


Comparison Of Old & New Technology

Compared with the old taillights, the new Q5 taillights use more technical quality lamp beads and lenses.
Make the light soft, not hurt the eyes, more secure and stable.


Old Model-fog Lens

Low cost, simple process, softens the light by reducing brightness

Q5-Optical Lens

High cost, complicated process, keep light transparent and bright without glare


Old Model-LED Patch

Low cost, simple process, and short life
More dazzling at the same brightness

Q5-COB Inversion

High cost, complicated process
Longer life, more stable
Softer at the same brightness

Brake Sensing-Integrated Accelerometer

Q5 comes with a built-in accelerometer/high-performance MCU and is powered by the three-level digital filter algorithm which ensures the correct detection a brake.


Shock Sensing

Automatically turn off the lights when there is no vibration for 30 seconds, and turn them on automatically when you feel the vibration

(Except in constant light mode)


Smart Light Sense

Built-in light sensor
Works in harmony with vibration induction
Smart Start and stop saves power

The strobe and constant light modes are manually controlled and are not affected by the sensing element


The SOS and Bright modes are manually controlled and are not affected by the sensing element


Battery Indicator

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


Switch modes at will

Click to switch the flashing mode: Flashing-Breathing-SOS-Shutdown


IPX6 Waterproof Design

Proper to any abusive environment


Compact and Lightweight design


CNC Aluminum Alloy Shell

Anti-scratch and anti-fall


Weight 0.120 kg
Dimensions 3 × 3 × 3 cm
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


Please use the charging cable included in the package to charge


Bicycle Smart Auto Brake Sensing Light IPx6 Waterproof LED Taillight

Power Supply


Brand Name


Model Number


Mounting Placement


Based on 11 reviews

5.00 Overall

Only logged in customers who have purchased this product may leave a review.

11 reviews for ROCKBROS Bike Rear Light Smart Auto Bicycle Brake Light

  1. a***r

    Ball hitch with the goods, the rockbros made an effort and solved everything successfully. I’m satisfied.

  2. Z***s

    Second I buy. Good quality. Delivery rspida. Everything arrived OK

  3. I***k

    Merciless hitting the lichtarik at rockbros. On excise duty, having bought more than one, ale against the fortified people. Chic rich! You are not sure to bless on dorrzi-Berit, don’t get used to it. Yaskravy lykhtarik with a lack of function, be it a relish. It is over-stated: having gone 300 km (I’m 10 years old) and having put it on exercises, if there is more than one ndikator. Yak about the money: rockbros-nilipshche, you can do it. Before the speech, May it is more than the eyepieces of the zmihnim Lins vid rockbros.

  4. S***m

    Exelent product, I have been using it for a week, which removes unscrewing, I charge it 1 time every week, at night it lights excellent, very resistant in conditions with a lot of rain, ma light really stops when you leave static ma bike, extremely easy to install, super recommended.
    It took me to arrive in Mexico city Xochimilco delegation 1 week and the packing was correct

  5. c***s

    Good material what they describe works very well

  6. P***e

    Product looks great quality and finish, I was well satisfied. Lighting is excellent and with various options. The delivery was fast. I recommend it to everyone.

  7. D***r

    I love it! Good product, works as described, hopefully very good duration

  8. r***a

    I bought 5 of these already.
    1 / I’ve got mine since 2 and a half years and it still works perfectly (color changed a bit at the top because my bike stays few hours under the sun each day).
    2 / My girlfriend got her bike stolen so light was gone with it.
    3 / I bought a second one for her but she lost it recently (the rubber band gave up or it got stolen).
    4 / I bought one for a friend as well.
    5 / I bought the third light for my girlfriend as she likes it.

    I think that shows you how satisfied we are with this product.

    The light arrived fully charged.

  9. a***r

    Great product. Just got two more for gifts. Super fast shipping, thanks!

  10. D***r

    Absolutely delighted with this lantern!!😃
    Four modes, one of which (the third), interacts with the brake. It flashes when driving, when braking, it lights up with a bright red light, like on a car! Never regretted taking this one.
    rockbros Thank you very much!!💪

  11. J***U

    Good product, thank you

SKU: W219LNB7GS4V Category: 
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ROCKBROS Bicycle Smart Auto Brake Sensing Light IPx6 Waterproof LED Charging Cycling Taillight Bike Rear Light Accessories Q5 1

ROCKBROS Bike Rear Light Smart Auto Bicycle Brake Light


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