·FIVE MODES SWITCH: The bike rear light has five modes to switch: 1. Red normal flash 2. Red&Blue flash 3. Colorful breathing flash 4. Two lights fast flash 5. Red steady on. Five modes for your choice, improve the safety of riding while also enhancing the fun, make you different in the crowd.

·EASY TO INSTALL: Saddle Bracket and Seat Post two bracket offered to mount on the saddle rail or the seatpost meet your different need. No extra tools needed, unscrews from the mount easily to take with you so it doesn't get stolen.

·USB RECHARGEABLE Design for long-term use, the rear bike light can work up to 50 hours after full charging（different modes has different battery life）, it can be easily charged via computers, chargers or power bank.

·IPX5 WATERPROOF and dustproof design make the bike rear light work well even you get caught in the sudden rain, meets daily cycling needs, do not recommended to soak in water or liquid for a long time.

·HIGH QUALITY & LIGHT: Aluminum alloy body make the bike light durable and anti-drop, optical lens and COB Light keep the light bright and not dazzling. We offer 1-year warranty and 100% satisfation guarantee, if you have any problem please feel free to contact us.