ROCKBROS BL S2 Smart Brake Taillight: Automatically turn on/off depending on light intensity and movement
For the urban commuter or evening rider who prioritizes safety without fuss, the ROCKBROS BL-S2 Smart Brake Taillight is your reliable co-pilot. This isn't just another bike light; it's a seamless safety upgrade that works quietly in the background, giving you peace of mind on busy streets or dim trails. The touch-sensitive control means no fumbling with buttons in gloves, and the smart light sensing turns it on automatically as dusk falls, so you never forget to be visible.
Experience the convenience of a light that thinks for you. The brake sensing feature detects deceleration and intensifies brightness instantly, alerting drivers behind you before you even tap the brakes—a subtle cue that can prevent rear-end collisions. With six lighting modes and up to 20 hours of battery life via Type-C charging, it stays ready for long rides or daily commutes. The IPX6 waterproof rating handles sudden rain, and at just 30g, it mounts discreetly on your seat without weighing you down. Ride confidently, knowing this taillight has your back.
Features
- Smart Light Sensing - Automatically light when in dark environment, auto rest when in light environment
- Updated touch sensitive button-free experience
- Synchronous mode ideal for group rides
- Six lighting modes with 10-20-5h battery
- Seamless aluminum alloy casing with IPX6 waterproof rating
- Type-C Charging - Long battery life with convenient Type-C charging
- Compact and lightweight (about 0.07 lbs)
- Equipped with seat bow and seat post brackets
- Automatically turn on/off depending on light intensity and movement
General specs
- Brand: ROCKBROS
- Model: BL S2
- Seller: Banggood
- ID: 2016073
- Brand: ROCKBROS
- Model: BL-S2
- Weight: 0.066 lbs
- Features: 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
- Material: ABS, PC
- Battery Life: 10 hours, 20 hours, 5 hours
- Control Type: Touch Control
- Product Name: Smart Brake Sensing Bike Taillight
- Lighting Modes: 6
- Battery Capacity: 400mAh
- Mounting Options: Seat bow bracket, Seat post bracket
- Rail Seat Spacing: 1.5 inches, 2.13 inches
- Waterproof Rating: IPX6
- Included Accessories: Tail Light, O Ring, Charging Cable, Seat Bow Bracket, Seat Bow Bracket Spacer, Zip Ties
- Measurement Tolerance: 0.39 inches, 0.79 inches
- Color Notice Variation: Yes
- First listed by seller: 2/23/26
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
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| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
ROCKBROS BL S2
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ROCKBROS WR05
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LAOTIE LS80 Smart sensor mode with automatic on/off
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CYCLAMI CY200 Black
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ROCKBROS BL-S1 Smart brake sensing technology
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OFFBONDAGE ATS-Q6 Brake sensing for increased safety
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| Brand | ROCKBROS | ROCKBROS | CYCLAMI | ROCKBROS | OFFBONDAGE | |
| Model | BL-S2 | WR05 | CY200 | ATS-Q6 | ||
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| Price | $16.97 | $11.97 | $13.98 | $11.97 | $11.97 | $16.97 |
| Seller | Banggood | Banggood | Banggood | Banggood | Banggood | Banggood |
| Update | Feb 24, 2026 | Feb 24, 2026 | Feb 24, 2026 | Feb 24, 2026 | Feb 24, 2026 | Feb 24, 2026 |
| Weight | 0.066 lbs | 0.11 lbs | Approx 0.077 lbs | |||
| Features | 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 | Smart Brake Sensing, High Visibility LEDs, Tool-Free Installation, Waterproof Design, Long Battery Life | 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 | Intelligent Light Control, Brake Sensing Technology, Back Saddle Flexibility, Brilliant LED Brightness, Precise Battery Indicator | Smart brake sensing technology, Ultra bright LED light for enhanced visibility, Easy to install and remove, USB rechargeable for convenience, Water resistant for all weather use | 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 |
| Material | ABS, PC | ABS | ABS PC | ABS PC | ABS PC | |
| Product Name | Smart Brake Sensing Bike Taillight | Smart Brake Rear Light | Smart Brake Tail Light for Bicycles | Pixel Smart Brake Tail Light | ||
| Lighting Modes | 6 | Low, Mid, High, Low High Power Flash, Fast Flash, Breathable Light | Single Flash, Double Flash, Breathing Flash, Rotating Flash, Steady on | |||
| Battery Capacity | 400mAh | 500mAH | 600mAh | 400 mAh | ||
| Waterproof Rating | IPX6 | IPX6 | IPX7 | |||
| Package Includes | 1 x Light, 1 x USB Cable | 1 x Bicycle Taillight, 1 x Charging Cable, 1 x Manual | 1 x Tail Light, 3 x Nylon Ties, 2 x Rubber Bands, 1 x Charging Cable | 1 x Tail Light, 1 x Charging Cable, 1 x Mounting Bracket, 4 x Cable Tie, 1 x User Manual | ||
