ROCKBROS Smart Bike Rear Tail Light IPX7 Waterproof Break Sensing Auto On/Off Rechargeable

【Smart Brake Sensing & Bright】The intelligent sensing design of the ROCKBROS bike tail lights allows them to automatically light up when braking. Our rear bike light emit a bright, wide-angle beam that can be seen from blocks away, ensuring you stay visible and safe on the road 【Rechargeable & Long-Lasting Battery】The built-in 400mAh rechargeable lithium battery in the bike rear lights provides long-lasting power, and the included USB charging cable makes it easy to charge from a computer, power bank, or any device with a USB port. Use the type-c port on the charging cable to connect to the tail light and the USB port to connect to the power supply 【5 Lighting Modes & Auto On/Off】Our bicycle tail lights come with five different lighting modes to choose from, including single flash（20-22h）, double flash（17-20h）, breathing flash（11-12h）, rotating flash（20-22h）, and constant light（3.5-4h）, to meet your preferences and needs. In intelligent mode, it will automatically turn on or off based on whether the bicycle is in a riding state 【IPX7 Waterproof & Power Indicator】Our bike brake lights are IPX7 waterproof, which means you can confidently place your bike in rainy and snowy weather. Four breathing indicator lights display remaining battery, each indicating 25% battery, reminding you to charge in a timely manner 【Easy Installation & Buy with Confidence】You can quickly install the bike back lights under the bicycle seat or seat post without using any tools. It can also be easily removed from the bicycle for charging. Our bike taillights come with a 12-month return and replacement service, if you have any dissatisfaction, please feel free to contact us