Q2S Smart Bike Tail Light Brake Sensing Bicycle Rear Lights

Q2S Smart Bike Tail Light Brake Sensing Bicycle Rear Lights

$17.99

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ROCKBROS Q2 Smart Bike Tail Light Brake Sensing Bicycle Rear Lights

The ROCKBROS Q2 Smart Bike Tail Light offers advanced brake sensing technology to enhance rider safety by instantly signaling deceleration. Its rechargeable battery ensures long-lasting performance, while the waterproof design guarantees reliable use in all weather conditions. Compact and easy to mount, this rear light provides bright, clear visibility to alert drivers and cyclists behind you, making it an essential accessory for serious cyclists focused on safety and performance.

Features

Smart Brake Sensing & Auto On/Off
This ROCKBROS smart bike tail light features advanced brake sensing technology. When braking, the high-brightness red LED automatically highlights to alert vehicles and pedestrians behind you—greatly improving nighttime riding safety. Built-in motion and light sensors provide intelligent auto on/off functionality in flash modes 1 and 2: it turns off after 30 seconds of no movement and lights back up once the bike is in motion. For continuous lighting, use modes 3 or 4 to disable the light sensor.
4 Lighting Modes for All Conditions
Choose from 4 lighting modes tailored for day or night rides:
Slow Flash Mode – Day: steady red with 3s brake light / Night: flash + brake + auto on/off
Breathing Mode – Day: breathing red with 3s brake light / Night: flash + brake + auto on/off
Fast Flash Mode – Flash + brake light all the time
Steady On Mode – Constant light + brake light for maximum visibility
The bright COB LED ensures you remain visible even in low-light conditions.
USB Rechargeable & Long Battery Life
Equipped with a built-in 260mAh lithium battery, this USB-C rechargeable bike rear light charges fully in about 2 hours and delivers 7 to 16 hours of runtime depending on the mode. A subtle light indicator shows charging status and alerts you when power is low.
IPX6 Waterproof & Lightweight Design
Rated IPX6, this rear light is fully waterproof and safe to use even in heavy rain. Constructed with high-quality ABS and PC material, it's impact-resistant and only 23g in weight, perfect for daily commuting or long-distance cycling.
2 Easy Mounting Options
The light includes both saddle rail and seatpost mounting brackets to suit different bike types and rider preferences. Install or remove it quickly without any tools. Great for road bikes, mountain bikes, and urban commuting bikes.

Product Information

Feature	Description
Brand	‎ROCKBROS
Material	ABS+PC
Lamp Beads	COB LED
Weight	≈23 g
Battery	3.7V 260mAh
Battery Life	About 7-16 hours
WaterProof	IPX6

Shipping	This item ships to
Delivery	Estimated between and . Will usually ship within 1 business day.

Description

ROCKBROS Q2 Smart Bike Tail Light Brake Sensing Bicycle Rear Lights

Features

Smart Brake Sensing & Auto On/Off
This ROCKBROS smart bike tail light features advanced brake sensing technology. When braking, the high-brightness red LED automatically highlights to alert vehicles and pedestrians behind you—greatly improving nighttime riding safety. Built-in motion and light sensors provide intelligent auto on/off functionality in flash modes 1 and 2: it turns off after 30 seconds of no movement and lights back up once the bike is in motion. For continuous lighting, use modes 3 or 4 to disable the light sensor.
4 Lighting Modes for All Conditions
Choose from 4 lighting modes tailored for day or night rides:
Slow Flash Mode – Day: steady red with 3s brake light / Night: flash + brake + auto on/off
Breathing Mode – Day: breathing red with 3s brake light / Night: flash + brake + auto on/off
Fast Flash Mode – Flash + brake light all the time
Steady On Mode – Constant light + brake light for maximum visibility
The bright COB LED ensures you remain visible even in low-light conditions.
USB Rechargeable & Long Battery Life
Equipped with a built-in 260mAh lithium battery, this USB-C rechargeable bike rear light charges fully in about 2 hours and delivers 7 to 16 hours of runtime depending on the mode. A subtle light indicator shows charging status and alerts you when power is low.
IPX6 Waterproof & Lightweight Design
Rated IPX6, this rear light is fully waterproof and safe to use even in heavy rain. Constructed with high-quality ABS and PC material, it's impact-resistant and only 23g in weight, perfect for daily commuting or long-distance cycling.
2 Easy Mounting Options
The light includes both saddle rail and seatpost mounting brackets to suit different bike types and rider preferences. Install or remove it quickly without any tools. Great for road bikes, mountain bikes, and urban commuting bikes.

Product Information

Feature	Description
Brand	‎ROCKBROS
Material	ABS+PC
Lamp Beads	COB LED
Weight	≈23 g
Battery	3.7V 260mAh
Battery Life	About 7-16 hours
WaterProof	IPX6