About the Product:

ROCKBROS Smart Brake-Sensing Rear Light | Multi-Mode, IPX7

Smart Brake-Sensing Bike Tail Light with IPX7 waterproof protection keeps you visible in any weather. Advanced brake-sensing technology automatically brightens when you slow down, alerting drivers to sudden stops. Multiple lighting modes—including a daytime-visible breathing flash—ensure you stay seen in both bright and low-light conditions. A reliable safety upgrade for commuters and road cyclists who prioritize visibility and protection.

Features

• Smart Brake Sensing & High Visibility
  This smart bike tail light instantly brightens when you brake, giving riders and drivers behind you a clear, timely warning. Its wide-angle, high-intensity beam is engineered for both day and night visibility, ensuring you stay noticeable from long distances even under bright sunlight.
• USB Rechargeable with Long Battery Life
  A built-in 400mAh rechargeable lithium battery delivers reliable runtime for daily use. The included USB-C charging cable lets you charge easily from a laptop, power bank, or any USB port.
• Five Lighting Modes with Auto On/Off
  Choose from Single Flash (20–22h), Double Flash (17–20h), Breathing Flash (11–12h), Rotating Flash (20–22h), and Steady On (3.5–4h). In smart mode, the rear light automatically turns on when you start riding and switches off when the bike stops to conserve power.
• IPX7 Waterproof with Battery Indicator
  Built to withstand rain and wet conditions, this tail light meets IPX7 waterproof standards. Four breathing indicators show the remaining battery level, with each indicator representing 25% power.
• Easy, Tool-Free Installation
  Mount the light under the saddle or on the seat post in seconds without tools. It detaches just as easily for quick charging and daily convenience.