ROCKBROS Q3 Smart Brake Sensing LED Bicycle Taillight – USB Rechargeable, IPX5 Water Resistant
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Product Description
ROCKBROS Q3 Smart Brake Sensing LED Bicycle Taillight – USB Rechargeable, IPX5 Water Resistant
Product Description
ROCKBROS Q3 Smart Brake Sensing Bicycle Taillight
Improve your cycling visibility with the ROCKBROS Q3 Smart Brake Sensing LED Bicycle Taillight. Designed for road bikes, mountain bikes, and everyday commuting, this compact rear light combines intelligent sensor technology, rechargeable convenience, and durable construction.
Featuring smart brake detection, ambient light sensing, and vibration-activated operation, the ROCKBROS Q3 automatically responds to changing riding conditions to provide practical rear illumination while helping conserve battery power.
With four lighting modes, a rechargeable 300mAh battery, and a manufacturer-stated runtime of up to approximately 30 hours, the Q3 offers versatile performance for recreational cycling, commuting, and low-light riding.
Its lightweight aluminum alloy and plastic housing, IPX5 water resistance, and convenient mounting design make it a practical accessory for everyday cyclists.
Key Features
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Smart Brake Sensing: Automatically activates a rear warning signal when braking is detected.
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Ambient Light Sensor: Automatically responds to changing light conditions to help conserve battery power.
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Intelligent Vibration Detection: Automatically switches off after approximately 30 seconds of inactivity and reactivates when movement is detected.
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Four Lighting Modes: Bright, Breathing, Flashing, and SOS.
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USB Rechargeable: Built-in rechargeable battery eliminates the need for disposable batteries.
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Up to 30 Hours Runtime: Manufacturer-stated operating time under applicable lighting conditions.
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IPX5 Water Resistance: Protection against water jets and rainy cycling conditions.
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Lightweight Design: Approximately 33 grams.
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Durable Construction: Aluminum alloy and plastic housing.
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Charging Reminder: Helps riders monitor charging needs.
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Easy Installation: Designed for convenient bicycle mounting.
Smart Sensor Functions
Brake Detection
The integrated brake sensor responds to braking activity by activating an additional rear warning signal, helping improve visibility to approaching road users.
Ambient Light Detection
The intelligent light sensor adjusts operation according to surrounding lighting conditions.
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Automatically switches off when sufficient ambient light is detected.
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Automatically switches on when surrounding light becomes dim.
Vibration Detection
The motion-sensing system helps conserve battery power during inactivity.
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Automatically switches off after approximately 30 seconds without detected movement.
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Reactivates when vibration is detected.
Sensor operation may vary according to the selected lighting mode.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | ROCKBROS |
| Model | Q3 |
| Product Type | Smart LED Bicycle Taillight |
| Body Material | Aluminum Alloy + Plastic |
| Battery | 3.7V, 300mAh Rechargeable |
| Battery Runtime | Up to Approximately 30 Hours |
| Lighting Modes | Bright, Breathing, Flashing, SOS |
| Smart Brake Sensing | Yes |
| Ambient Light Sensing | Yes |
| Vibration Sensing | Yes |
| Auto-Off Function | Approximately 30 Seconds of Inactivity |
| Water Resistance | IPX5 |
| Charging Method | USB |
| Mounting Position | Seatpost |
| Dimensions | Approximately 30 × 34 × 64 mm |
| Weight | Approximately 33 g |
| Recommended Use | Road, Mountain, and Commuter Cycling |
Battery Care & Safety
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Use the manufacturer's recommended USB charging connection.
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Charge in ambient temperatures between 5°C and 40°C (41°F–104°F).
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Avoid charging in direct sunlight or inside hot vehicles.
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Disconnect the charging cable once charging is complete.
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Inspect the mounting system before riding.
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Keep charging contacts clean and free of debris.
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Avoid prolonged exposure to excessive heat.
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For extended storage, periodically charge and discharge the battery according to the manufacturer's recommendations.
Why Choose the ROCKBROS Q3?
The ROCKBROS Q3 combines smart brake detection, intelligent lighting controls, and rechargeable convenience in a compact bicycle taillight.
Its multiple lighting modes, IPX5 water resistance, and automatic sensing functions make it a practical choice for cyclists seeking improved rear visibility and everyday riding convenience.













