ROCKBROS Smart Brake-Sensing Rear Light is a compact, USB-rechargeable tail light designed for urban commuters and road cyclists who prioritize visibility and smart safety on every ride. Its brake-sensing technology automatically brightens when you slow down, giving drivers a clear, timely warning.

• Smart Brake Sensing: Instantly brightens when you brake or slow, delivering a clear warning to riders behind you.
• High-Visibility, Wide-Angle Beam: Long-range, wide-angle illumination engineered for reliable visibility in both daylight and low-light conditions.
• Five Lighting Modes: Choose from Single Flash (20–22h), Double Flash (17–20h), Breathing Flash (11–12h), Rotating Flash (20–22h), and Steady On (3.5–4h); includes a daytime-visible breathing flash option.
• Auto On/Off Smart Mode: Automatically powers on when you start riding and shuts off when you stop to conserve battery.
• USB-C Rechargeable, 400mAh: Built-in rechargeable battery with USB-C charging for easy top-ups via laptop, power bank, or USB port.
• IPX7 Waterproof: Designed to perform reliably in rain and wet conditions, keeping you visible when weather turns.
• Battery Indicator: Four breathing indicators show remaining power, with each light representing 25% of battery life.
• Tool-Free Installation: Mounts quickly under the saddle or on the seat post without tools and detaches easily for charging or removal.

This rear light directly tackles common riding concerns: being seen by drivers in all weather, signaling braking to reduce rear-end collisions, and managing power with smart auto on/off. Its durable construction, multiple modes, and straightforward installation make it ideal for daily commuting, city riding, and weekend road sessions. With ROCKBROS, you get reliable visibility, practical features, and a safer ride—without extra hassle.