---
product_id: 430192409
title: "ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light"
brand: "rockbros"
price: "€ 55.50"
currency: EUR
in_stock: true
reviews_count: 8
category: "Rockbros"
url: https://www.desertcart.fr/products/430192409-rockbros-smart-bike-light-with-brake-sensor-rechargeable-rear-tail
store_origin: FR
region: France
---

# 400 lumens high-intensity COB LED 50 hours battery life on full charge IPX6 waterproof for all-weather rides ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light

**Brand:** rockbros
**Price:** € 55.50
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Light up your ride, own the road—safety never looked this smart!

## Quick Answers

- **What is this?** ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light by rockbros
- **How much does it cost?** € 55.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/430192409-rockbros-smart-bike-light-with-brake-sensor-rechargeable-rear-tail)

## Best For

- rockbros enthusiasts

## Why This Product

- Trusted rockbros brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Power:** 400mAh rechargeable battery delivers up to 50 hours of continuous use with clear battery level indicators.
- • **Smart Brake Sensing:** Automatically flashes bright red for 5 seconds when braking, keeping you visible and safe in traffic.
- • **Rugged & Weatherproof:** Premium aluminum alloy body with IPX6 waterproof rating ensures durability and performance rain or shine.
- • **Dynamic Lighting Modes:** Choose from 4 versatile modes—Normal, Breathing, Fast Flash, and Steady On—to match any riding condition.
- • **Effortless Auto On/Off:** Motion and light sensors power the light on/off intelligently, conserving battery without sacrificing safety.

## Overview

The ROCKBROS Bike Tail Light Smart combines ultra-bright 400 lumen COB LED technology with intelligent brake sensing and motion-activated auto on/off features. Designed for professional cyclists and urban commuters, it offers 4 dynamic lighting modes, a robust 400mAh rechargeable battery lasting up to 50 hours, and a durable aluminum alloy build with IPX6 waterproof rating. Easy to install and compatible with various bike types, this tail light ensures maximum visibility and safety in all weather conditions.

## Description

desertcart.com : ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light | IPX6,LED Back Lights, Ultra Bright,Type C USB,Waterproof,Cycling,Safety Taillight, Bike Accessories : Sports & Outdoors

Review: Tiny, well-built, bright, lots of features. - Mounted sturdily under the seat. I was able to verify all the features including brake lighting immediately. Looking forward to using it on my commute tomorrow! 2-day usage update: I love this light! It's sturdy, came with a couple of mounting options (bracket and strap), a short charging cable (standard USB connections) and is tiny but VERY visible (according to an objective bystander). The most useful features are the battery life and auto on/brake/off light options. I've used it on two round-trip commutes (1 hour total ride time), and the charge indicators say it's still over 75% charged. The thing that makes me most happy, though, is that it just comes on when I move the bike, and turns off after about 30 seconds when the bike's stationary. No need to push the power button several times to cycle through until the light turns off. The motion sensor is spot-on, and the light brightens considerably when it detects a slow-down, simulating being connected to the brakes. I've been using the "pulse" setting, and when it goes into braking mode it changes to very bright, continuous light. All in all, I highly recommend this light if you're trying to be as visible as possible on the streets, night or day.
Review: Solid build and a smart mounting design - This ROCKBROS tail light feels well-made right out of the box. The hardware is solid, the setup is straightforward, and the light itself is impressively bright. I especially like how it mounts directly to the back of the saddle. It stays put securely, unlike other lights I’ve used that rely on cheap rubber or plastic bands. Those always seem to loosen and slide down the seat post after a while. With this design, the light stays exactly where you put it, which is a big plus for regular riding. I haven’t had it long enough to speak to long-term durability yet, but it’s easy to remove for charging with the included USB-C cable. Overall, it’s a well-designed, reliable tail light that does exactly what it should.

## Features

- High-Intensity LED & Brake Sensing Advancement:Illuminate your surroundings with our rear bike light's high-lumen COB LED. featuring smart sensor technology that activates a brake light when you slow down. The light emits a high-intensity flash for 5 seconds, alerting riders behind you for enhanced safety
- Dynamic Modes & Easy Install: Choose from 4 dynamic light modes: (1) Normal Flash, (2) Breathing Flash, (3) Fast Flash, (4) Steady On. Tailored for diverse riding conditions day and night. Effortlessly install with metal under-seat or rubber band seat post mounts. Fits road, mountain, cruiser, scooter
- Smart Auto On/Off & Battery Efficiency: Experience intelligent functionality with our bike rear light. Equipped with Motion and Light Sensors, it automatically turns off after 30 seconds of inactivity. Once movement is detected or your bike is in motion, the light reignites (auto on/off applies to modes 1 and 2). For continuous daytime visibility, opt for modes 3 or 4 to bypass the Light Sensor (Brake sensing active in all modes)
- Extended Battery Life & Intuitive Power Display:Stay powered during your rides with the 400mAh Li-ion battery. On a full charge, enjoy up to 50 hours of usage. The built-in power indicator features four blue breathing lights, each indicating 25% battery capacity, ensuring you know when to recharge
- IPX6 Waterproof & Durable Design:Made with durable aluminum alloy housing and IPX6 waterproof protection, this LED bike light is built for daily commuting and outdoor cycling in various weather conditions

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09VYY4V88 |
| Auto Part Position | Rear |
| Best Sellers Rank | #5,693 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Bike Taillights |
| Brand | ROCKBROS |
| Brand Name | ROCKBROS |
| Color | black |
| Customer Reviews | 4.6 out of 5 stars 762 Reviews |
| Included Components | mount |
| International Protection Rating | IP65 |
| Item Dimensions L x W x H | 1.57"L x 1.34"W x 1.34"H |
| Item Highlight | IPX6,LED Back Lights, Ultra Bright,Type C USB,Waterproof,Cycling,Safety Taillight, Bike Accessories |
| Item Weight | 53 g |
| Manufacturer | ROCKBROS |
| Manufacturer Part Number | TL907Q50-CBR |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Number | TL907Q50-CBR |
| Mounting Type | Seat Mount |
| Number of Items | 1 |
| Number of settings | 1 |
| Power Source | Battery Powered |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Manufacturer |
| Water Resistance Level | Waterproof |

## Product Details

- **Auto Part Position:** Rear
- **Brand:** ROCKBROS
- **Color:** black
- **Item Weight:** 53 g
- **Material:** Aluminum
- **Mounting Type:** Seat Mount
- **Number of settings:** 1
- **Power Source:** Battery Powered
- **Product Dimensions:** 1.57"L x 1.34"W x 1.34"H
- **Water Resistance Level:** Waterproof

## Images

![ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light - Image 1](https://m.media-amazon.com/images/I/61zm72dq2cL.jpg)
![ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light - Image 2](https://m.media-amazon.com/images/I/71XZ-2hqklL.jpg)
![ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light - Image 3](https://m.media-amazon.com/images/I/81VRrXQ2KDL.jpg)
![ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light - Image 4](https://m.media-amazon.com/images/I/81JPpF2yqqL.jpg)
![ROCKBROS Smart Bike Light with Brake Sensor, Rechargeable Rear Tail Light - Image 5](https://m.media-amazon.com/images/I/718EAaPWxoL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: What is included inside the package?**
A: Dual Bracket Mount: Comes with two brackets (Saddle Rail Mount + Seat Post Mount), Type-C cable and English manual. Single Saddle Rail Mount / Single Seat Post Mount: Includes only one matching bracket, plus Type-C cable and English manual.

**Q: Where is the USB port on the light unit? Is it accessible without removing the tail light from the saddle?**
A: The USB port is located between the light and the rack. You need to remove the tail light from the rack to charge it.

**Q: Does the brake feature activate under light braking, or only during moderate and heavy braking?**
A: It is quite sensitive. The brake light will activate with any braking.

**Q: How quickly does it brighten when braking? Can it be set to stay off and only come on when braking?**
A: It brightens immediately upon sensing the bike slowing down. There are 4 modes, and the light must be turned on for the brake light function to work.

**Q: Does it have a low or dead battery indicator on the handlebars?**
A: No. There are four small blinking blue dots in the center of the light unit. When all four blink, it indicates a 100% charge; three dots mean 75%, and so on.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Tiny, well-built, bright, lots of features.
*by B***M on October 8, 2026*

Mounted sturdily under the seat. I was able to verify all the features including brake lighting immediately. Looking forward to using it on my commute tomorrow! 2-day usage update: I love this light! It's sturdy, came with a couple of mounting options (bracket and strap), a short charging cable (standard USB connections) and is tiny but VERY visible (according to an objective bystander). The most useful features are the battery life and auto on/brake/off light options. I've used it on two round-trip commutes (1 hour total ride time), and the charge indicators say it's still over 75% charged. The thing that makes me most happy, though, is that it just comes on when I move the bike, and turns off after about 30 seconds when the bike's stationary. No need to push the power button several times to cycle through until the light turns off. The motion sensor is spot-on, and the light brightens considerably when it detects a slow-down, simulating being connected to the brakes. I've been using the "pulse" setting, and when it goes into braking mode it changes to very bright, continuous light. All in all, I highly recommend this light if you're trying to be as visible as possible on the streets, night or day.

### ⭐⭐⭐⭐⭐ Solid build and a smart mounting design
*by N***H on July 29, 2026*

This ROCKBROS tail light feels well-made right out of the box. The hardware is solid, the setup is straightforward, and the light itself is impressively bright. I especially like how it mounts directly to the back of the saddle. It stays put securely, unlike other lights I’ve used that rely on cheap rubber or plastic bands. Those always seem to loosen and slide down the seat post after a while. With this design, the light stays exactly where you put it, which is a big plus for regular riding. I haven’t had it long enough to speak to long-term durability yet, but it’s easy to remove for charging with the included USB-C cable. Overall, it’s a well-designed, reliable tail light that does exactly what it should.

### ⭐⭐⭐⭐⭐ The smart brake sensing feature is legit!
*by C***W on May 31, 2025*

The smart brake sensing feature is legit - it actually brightens when I slow down or stop, just like a car brake light. That extra visibility gives me more confidence when riding on roads, especially at night or in low-light conditions. Drivers definitely notice me more now. The light is USB-C rechargeable, which is super convenient (finally no more micro-USB cables), and the battery life has been solid so far. I’ve done several multi-hour rides without needing a recharge. I attached a short video that shows the different light modes so you can see how it works in action. In the video, it’s hard to see, but there are 4 tiny blue LEDs that flash from time to time — these are the battery level indicators. Each dot represents 25% battery life, so when all four are flashing, it means the light is fully charged. A small but really useful feature! It’s also proven to be durable. I’ve ridden through rain and puddles, and the IPX6 waterproofing has held up perfectly. Overall, this is a bright, smart, and well-designed rear light. If you ride on streets or trails and want to boost your visibility and safety, this one’s absolutely worth picking up. I do wish it were a bit cheaper, though.

## Frequently Bought Together

- ROCKBROS Bike Tail Light Smart,Brake Sensing Bicycle Rear Lights for Night Ride,Ultra Bright LED Back Lights,Type C USB Rechargeable,IPX6 Waterproof,Cycling Safety Taillight Accessories
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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-10-12*