Features:
Shell USES high strength, lightweight polycarbonate material(polycarbonate)
In the plastic with the highest impact resistance engineering plastic induction cap lights brighten your life anytime and anywhere, is your home to travel, outdoor sports good partners.
Specification:
All in one design bicycle light:
- Material: PC Shell; and ABS Bottom sit.
- No wires or external batteries.
- Super bright 120 lumen output bicycle rear light led.
- 180 degree visibility.
- only35g with the battery.
- Size: 72x21x22/mm
- IP Rating>>IPX 6
USB Rechargeable 
- Charges from your computer or any device with a USB port.
Smart Charging 
- 2 hour charging time 100% power can work 3 hours. Flashing time 14hours.