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.
Gaciron LOOP-100 Smart Brake Bike Tail Light: Smart brake technology
If you are interested in more details, you can find full information on the seller's page.
€15.85
Last price update: 11/2/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
Product details
Features
- Magnetic mounting
- Waterproof design
- Bicycle rear light
- Suitable for seat tube and saddle
- Smart brake technology
If you commute through city traffic, the Gaciron LOOP-100 Smart Brake Bike Tail Light turns your ride into a safer one. Mount it on your seatpost or saddle rail in seconds with the magnetic clip. No tools, no straps—just click and go.
The smart brake feature senses deceleration and automatically brightens the light. Drivers behind you see a clear signal when you slow down, giving them extra time to react. The 100-lumen output is bright enough for daytime visibility, and the wide beam pattern ensures you're seen from multiple angles.
When you park, detach the light from the mount and take it with you. The waterproof design holds up in rain, and the USB rechargeable battery lasts for hours. You don't need another gadget to worry about—this light simply works when you need it most.
General specs
- Brand: Gaciron
- Model: LOOP-100
- Seller: AliExpress
- ID: 1005005814194267
- Type: Bicycle Rear Light
- Brand: Gaciron
- Model: LOOP-100
- Features: Smart Brake, Waterproof
- Mounting: Magnetic Mounting, Seat Tube, Saddle
- First listed by seller: June 22, 2026
- ENFITNIX Cubelite III vs Gaciron LOOP-100: brightness and automatic shut-off Comparison with: ENFITNIX Cubelite III Auto Brake Rear Light
Price History for seller AliExpress
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Gaciron LOOP-100 Smart brake technology
|
LAOTIE LS80 Smart sensor mode with automatic on/off
|
ROCKBROS WR05
|
WEST BIKING 0701455 Basic A Smart brake sensing
|
ROCKBROS BL S2
|
OFFBONDAGE ATS-Q6 Brake sensing for increased safety
|
|
| Brand | Gaciron | LAOTIE | ROCKBROS | WEST BIKING | ROCKBROS | OFFBONDAGE |
| Model | LOOP-100 | LS80 | WR05 | 0701455 Basic A | BL S2 | ATS-Q6 |
| Price | €15.85 | €11.93 | €10.22 | €39.00 | €14.49 | €14.49 |
| Seller | AliExpress | Banggood | Banggood | Joom | Banggood | Banggood |
| Update | Aug 28, 2026 | May 9, 2026 | May 9, 2026 | Sep 5, 2026 | May 9, 2026 | May 9, 2026 |
| Features | Smart Brake, Waterproof | Light sensor (ambient light darker = stronger light), Shock sensor (auto-on when riding, auto-off after 3 minutes if forgotten), Power save aurora mode (2 hours continuous use), Power saving mode (6 hours release), Safety (no glare, accident prevention), Cutoff line design (German StVZO bicycle headlight authenticate), USB charging, Easy to install anti-fall protection | Smart Brake Sensing, High Visibility LEDs, Tool-Free Installation, Waterproof Design, Long Battery Life | Touch sensitive button-free experience, Synchronous mode for group rides, Automatic on/off based on light intensity and movement, Compact and lightweight, Seamless aluminum alloy casing, Smart Light Sensing, Type-C Charging | Dual Bracket Design, Lightweight and Portable, Brake Sensing, Intelligent Start Stop, 13 Light Modes, IPX6 Waterproof Rating, Day Night Light Sensing, Adjustable Brightness, Gear Memory Function | |
| Weight | 0.11 lbs | 0.066 lbs | Approx 0.077 lbs | |||
| Material | ABS | ABS, PC | ABS PC | |||
| Product Name | Smart Brake Rear Light | Smart Brake Sensing Bike Taillight | Pixel Smart Brake Tail Light | |||
Gaciron LOOP-100 Smart brake technology
€15.85
When this device makes sense
Product confidence
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.