ROCKBROS R3 Smart Brake Sensing Bike Taillight: Smart brake light with automatic detection
For the commuter navigating city streets or the weekend rider on rural paths, the ROCKBROS R3 tail light is your reliable partner for visibility. While many bike lights focus on brightness, this one prioritizes smart safety, giving you confidence that drivers notice you, especially during sudden stops.
Its intelligent brake light activates automatically when you slow down, flashing brighter to alert traffic behind you. The mic picks up the subtle vibration of your bike decelerating, so the alert pops up before a car gets too close. With four lighting modes, you can choose a steady glow for dark trails or a flashing pattern for busy roads. The IPX6 waterproof rating means it handles rain and splashes without fail, and the Type-C rechargeable battery eliminates the hassle of disposable cells. Install it easily on your seat post with the included bracket, and ride knowing you're seen.
Features
- 4 lighting modes
- IPX6 waterproof rating
- Type-C rechargeable battery
- Vibration sensor for safety
- Easy installation with dual bracket design
- Smart brake light with automatic detection
General specs
- Brand: ROCKBROS
- Model: R3
- Seller: Banggood
- ID: 2016069
- Brand: ROCKBROS
- Model: R3
- Weight: 0.073 lbs
- Features: Dual Bracket Design, Same Frequency Induction Brake Light, Smart Brake Light with Automatic Detection, Easy Installation, Wear and Tear Resistant, Versatile for All Bicycle Types
- Material: Aluminum Alloy, Plastic Base
- Dimensions: 1.18 x 1.34 x 1.34 inches
- Lamp beads: COB Lamp Bead
- Battery Type: 3.7V 300mAh Lithium Battery
- Lighting Modes: 4
- Package Includes: 1 x Taillight, 1 x Holder, 1 x Charging Cable
- Waterproof Rating: IPX6
- Measurement Tolerance: 0.39 x 0.79 inches
- Color Notice Variation: Display Differences May Occur
- Applicability Post Seat: 1.5 x 2.13 inches
- First listed by seller: 2/23/26
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Banggood
| Date | Price |
|---|---|
| 2/24/26 | $17.00 |
| 2/23/26 | $16.92 |
Shipping options
United States
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|---|---|---|---|---|---|---|
ROCKBROS R3 Smart brake light with automatic detection
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ROCKBROS Q5 mini
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ROCKBROS Q5
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CYCLAMI CY120 Auto brake sensing activation
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LAOTIE LS80 Smart sensor mode with automatic on/off
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| Brand | ROCKBROS | ROCKBROS | ROCKBROS | CYCLAMI | ||
| Model | R3 | Q5mini | WR05 | ROCKBROS Q5 | CY120 | |
| Color | ||||||
| Rating |
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| Price | $17.00 | $17.00 | $12.01 | $17.00 | $14.00 | $14.00 |
| Seller | Banggood | Banggood | Banggood | Banggood | Banggood | Banggood |
| Update | Mar 1, 2026 | Feb 27, 2026 | Mar 1, 2026 | Feb 28, 2026 | Mar 1, 2026 | Feb 28, 2026 |
| Weight | 0.073 lbs | 0.075 lbs | 0.11 lbs | 0.12 lbs | 0.06 lbs | |
| Features | Dual Bracket Design, Same Frequency Induction Brake Light, Smart Brake Light with Automatic Detection, Easy Installation, Wear and Tear Resistant, Versatile for All Bicycle Types | Dual bracket design for easy installation, Smart tail light with brake sensing function, Compact and lightweight, Suitable for mountain bikes and road bikes, Enhances visibility for night cycling | Smart Brake Sensing, High Visibility LEDs, Tool-Free Installation, Waterproof Design, Long Battery Life | Vibration Sensor Wake-up, Automatically turn on/off based on light intensity and motion, Auto sleep mode for power saving, Seat rail mounting, 4 flash modes, 20 hours runtime, Type C charging, Battery indicator flashes every 6 seconds, Compact and lightweight design, IPX6 waterproof | Instant Activation, Vibration Wake Up, Energy Saving Mode, Multiple Light Modes, Waterproof Design | 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 |
| Material | Aluminum Alloy, Plastic Base | Aluminum Alloy | ABS | Aluminum Alloy, 6061 Aluminium alloy | Carbon Fiber, PCB | |
| Dimensions | 1.18 x 1.34 x 1.34 inches | 2.36 x 2.09 x 1.50 inches | 1.57 x 1.34 x 1.34 inches | 1.5 inches x 1.16 inches | ||
| Lighting Modes | 4 | Low, Mid, High, Low High Power Flash, Fast Flash, Breathable Light | Single Flash, Double Flash, Breathing Flash, Steady On, Running Lights, Spinning Wheels | |||
| Waterproof Rating | IPX6 | IPx6 | IPX6 | |||
| Battery Capacity | 3.7V 250mAh | 500mAH | 400mAh | |||
