Smart Brake Tail Lights
Compare supplier-described brake sensing, Type-C charging, mount options, runtime wording, and weather ratings before choosing a rear bike light.
ROCKBROS REX01 REX01 Smart Brake Sensing Bike Taillight
Features
- Automatically turns on/off based on light and movement
- Five lighting modes with 9.5-30 hour battery life
- Type-C USB charging for convenience
- Compact and lightweight at 1.48 oz
- IPX6 waterproof rating
- Smart light sensing for automatic operation in dark environments
General specs
- Brand: ROCKBROS
- Model: REX01
- Seller: Banggood
- ID: 2018322
- Size: 3.15 x 1.97 x 2.05 inches
- Brand: ROCKBROS
- Model: REX01
- Weight: 0.093 lbs
- Material: ABS PC
- Lamp beads: 0603
- Battery Life: 9.5-30h
- Charging Port: USB-C
- Lighting Modes: 5
- Smart Features: Auto on/off based on light intensity and movement, Auto light in dark environments, Auto rest in light environments
- Battery Capacity: 500mAh
- Package Contents: Rear Light, Hexagonal Wrench, Type C Charging Cable, Seat Pole Bracket, Bow Bracket, Ring
- Waterproof level: IPX6
- First listed by seller: February 23, 2026
If you are interested in more details, you can find full information on the seller's page.
€14.49
Last price update: 5/9/26
Available to order
Price History for seller Banggood
Shipping options
Delivery to 
United States
United States
Available
For the everyday commuter or weekend rider who wants to be seen without fuss, this taillight is your silent guardian. It’s not just about safety; it’s about effortless peace of mind on busy streets or dim trails. The smart brake sensing kicks in the moment you slow down, giving drivers that extra split-second notice—like a built-in reflex that works before you even think to signal.
You get five lighting modes to match any ride, from a steady glow for city cruising to a flashing pattern that cuts through fog. The IPX6 waterproof rating means a sudden downpour won’t leave you in the dark. With a 500mAh battery and USB-C charging, it powers up quickly and lasts through long adventures, so you can focus on the road ahead. Compact at 42g, it mounts securely with included brackets, staying put on bumpy paths.
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
ROCKBROS REX01
|
Bicycle Tail Rear Light with Auto Brake Sensing
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ROCKBROS Q1 MAX Intelligent brake sensing for safety warning
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CYCLAMI CY120 Auto brake sensing activation
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USB Rechargeable Tail Light with Wireless Remote Wireless remote control
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Smart Bike Taillight 350mAh battery
|
|
| Brand | ROCKBROS | ROCKBROS | CYCLAMI | GIYO | ||
| Model | REX01 | Intelligent Induction Brake Warning Light | Q1 MAX | CY120 | ||
| Price | €14.49 | €11.93 | €11.08 | €11.93 | €15.34 | €15.34 |
| Seller | Banggood | Banggood | Banggood | Banggood | Banggood | Banggood |
| Update | May 9, 2026 | May 9, 2026 | May 9, 2026 | May 9, 2026 | May 9, 2026 | May 9, 2026 |
| Size | 3.15 x 1.97 x 2.05 inches | 1.34 x 1.34 x 1.18 inches | 3.35x0.87 inches | Mini | ||
| Weight | 0.093 lbs | 0.09 lbs | 0.066 lbs | 0.06 lbs | 0.07 lbs | 26g (0.057 lbs) |
| Material | ABS PC | CNC Aluminum Alloy, Plastic | Carbon Fiber, PCB | ABS Metal | ||
| Battery Life | 9.5-30h | 20 hours | 8-40 hours | |||
| Lighting Modes | 5 | 5 Gears | Single Flash, Double Flash, Breathing Flash, Steady On, Running Lights, Spinning Wheels | |||
| Battery Capacity | 500mAh | 500 mAh | 400mAh | 500 mAh | 350mAh | |
ROCKBROS REX01
€14.49
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