---
product_id: 436670886
title: "ROCKBROS Bike Tail Light Smart,Brake Sensing Bicycle Rear Lights,Ultra Bright LED Back Lights,Type C USB Rechargeable,IPX6 Waterproof,Cycling Safety Taillight Accessories"
brand: "rockbros"
price: "53203CFA"
currency: XOF
in_stock: true
reviews_count: 5
category: "Rockbros"
url: https://www.desertcart.sn/products/436670886-rockbros-bike-tail-light-smart-brake-sensing-bicycle-rear-lights
store_origin: SN
region: Senegal
---

# Ultra-bright COB LED, 150m visibility 400mAh USB-C rechargeable battery, up to 50h runtime IPX6 waterproof, all-weather durability ROCKBROS Bike Tail Light Smart,Brake Sensing Bicycle Rear Lights,Ultra Bright LED Back Lights,Type C USB Rechargeable,IPX6 Waterproof,Cycling Safety Taillight Accessories

**Brand:** rockbros
**Price:** 53203CFA
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Light up your ride, brake smarter, ride safer!

## Quick Answers

- **What is this?** ROCKBROS Bike Tail Light Smart,Brake Sensing Bicycle Rear Lights,Ultra Bright LED Back Lights,Type C USB Rechargeable,IPX6 Waterproof,Cycling Safety Taillight Accessories by rockbros
- **How much does it cost?** 53203CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/436670886-rockbros-bike-tail-light-smart-brake-sensing-bicycle-rear-lights)

## 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:** Up to 50 hours of continuous use on a single charge with a clear 4-level battery indicator.
- • **4 Dynamic Light Modes:** Customize your ride with Normal, Breathing, Fast Flash, or Steady On modes for any time or terrain.
- • **Rugged & Weatherproof:** Premium aluminum alloy build with IPX6 waterproof rating ensures reliable performance rain or shine.
- • **Auto On/Off Intelligence:** Motion and light sensors power the light on/off automatically, maximizing battery life without hassle.
- • **Brake-Sensing Safety Alert:** Smart sensor triggers a 5-second high-intensity brake flash to keep you visible and safe in traffic.

## Overview

The ROCKBROS Bike Tail Light Smart combines ultra-bright COB LED technology with intelligent brake sensing to enhance cycling safety. Featuring 4 customizable light modes, auto on/off sensors, and a robust 400mAh USB-C rechargeable battery offering up to 50 hours of runtime, this IPX6 waterproof aluminum alloy taillight is designed for all-weather durability and effortless installation on various bike types. Stay visible and confident on every ride.

## Description

Product Information: Lamp Beads: COB LED Battery: USB Rechargeable, 3.7V/400 mAh Visible Distance: 150 meters Material of Shell: Aluminum Alloy Material of Rack: Aluminum Alloy+Plastic Weight : 53 g Size：40 x 34x34mm Charging Time: 3-4 hours Four Modes: Mode 1: Normal Flash Mode 50hours Mode 2: Breathing Flash Mode 40hours Mode 3: Fast Flash Mode 40hours Mode 4: Steady On Mode 20hours Suit for seat rail spacing：47-55mm

Review: A Great Value for a Taillight - I purchased this taillight to augment the anemic flasher on my Garmin Varia Radar. The RockBros light is a great value and an excellent rear light. A full charge seems to last forever and the brake light function is appreciated by riding partners. The light is very bright and easily visible even on a sunny day. The light came with two mounts, a strap for the seat post or a clamp on mount for the seat rails. The light screws into either of them just like a bottle cap. The charging port is accessed when you unscrew the light from the mount. The strap mount works fine, but as a rule I just don't trust straps. I used the clamp mount, which installed easily and holds the light in place on the rails. The clamp was a slight bit loose on my rails, but a small bit of tape under the clamp fixed the issue. I've used the light for about 1500 miles on gravel and trails with no issues. Taillights are a simple bit of kit, but I really appreciate the added visibility, both day and night. Hard to beat the value and function with this light.
Review: Super Bright! - works unbelievably well. super easy install considering it gives you multiple ways to mount. My sister normally follows right behind and the brake sensing works perfect she knows when im slowing down and its bright enough for cars to see me at night. definitely worth the money

## 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
- Durable Build & All-Weather Ready : Crafted from premium aluminum alloy, our bicycle brake light boasts an elegant metallic finish. Designed to withstand diverse weather conditions with an IPX6 Waterproof rating, making it suitable for any ride

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09VYY4V88 |
| Auto Part Position | Rear |
| Best Sellers Rank | #5,849 in Sporting Goods ( See Top 100 in Sporting Goods ) #11 in Bike Taillights |
| Brand | ROCKBROS |
| Brand Name | ROCKBROS |
| Color | black |
| Colour | black |
| Customer Reviews | 4.6 out of 5 stars 681 Reviews |
| Included Components | mount |
| International Protection Rating | IP65 |
| Item Dimensions L x W x H | 40L x 34W x 34H millimeters |
| Item Weight | 53 Grams |
| Item weight | 53 Grams |
| Manufacturer | ROCKBROS |
| Manufacturer Part Number | TL907Q50-CBR |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Number | TL907Q50-CBR |
| Mounting Type | Seat Mount |
| Number of settings | 4 |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Unit Count | 1 Count |
| Water Resistance Level | Waterproof |
| Water resistance level | Waterproof |

## Product Details

- **Brand:** ROCKBROS
- **Colour:** black
- **Material:** Aluminum
- **Power source:** Battery Powered
- **Water resistance level:** Waterproof

## Images

![ROCKBROS Bike Tail Light Smart,Brake Sensing Bicycle Rear Lights,Ultra Bright LED Back Lights,Type C USB Rechargeable,IPX6 Waterproof,Cycling Safety Taillight Accessories - Image 1](https://m.media-amazon.com/images/I/61zm72dq2cL.jpg)

## 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

### ⭐⭐⭐⭐⭐ A Great Value for a Taillight
*by M***. on 12 October 2024*

I purchased this taillight to augment the anemic flasher on my Garmin Varia Radar. The RockBros light is a great value and an excellent rear light. A full charge seems to last forever and the brake light function is appreciated by riding partners. The light is very bright and easily visible even on a sunny day. The light came with two mounts, a strap for the seat post or a clamp on mount for the seat rails. The light screws into either of them just like a bottle cap. The charging port is accessed when you unscrew the light from the mount. The strap mount works fine, but as a rule I just don't trust straps. I used the clamp mount, which installed easily and holds the light in place on the rails. The clamp was a slight bit loose on my rails, but a small bit of tape under the clamp fixed the issue. I've used the light for about 1500 miles on gravel and trails with no issues. Taillights are a simple bit of kit, but I really appreciate the added visibility, both day and night. Hard to beat the value and function with this light.

### ⭐⭐⭐⭐⭐ Super Bright!
*by S***L on 29 April 2026*

works unbelievably well. super easy install considering it gives you multiple ways to mount. My sister normally follows right behind and the brake sensing works perfect she knows when im slowing down and its bright enough for cars to see me at night. definitely worth the money

### ⭐⭐⭐⭐ Decent value
*by I***N on 19 January 2026*

Good build quality and mounting hardware feels secure. I like the two mounts included; one light for two bikes; just unscrews from one mount to screw onto the other. USB-C charging is always nice. The 4 modes have good options for always flashing or motion detection. Brightness is pretty good for night-time, but won't overcome sunset-type conditions and the light is not very noticeable in daylight. I'd recommend finding a brighter rear light for day time. The 4 dots for battery level are helpful but don't work great. I haven't seen 1 dot "25% battery life" because it dies after it gets to 2 dots. That said, if it's charged up the battery life is still decent and overall still a good light.

## Frequently Bought Together

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-07-22*