Position:Rear Light Type:LEDs Power Supply:Battery Mounting Placement:Seatpost Certification:CE ROHS Name:USB Rechargeable bike tail light Material:Plastic ABS LED:5 red smd leds Install position:Seat Post Size:67*30*27 mm Battery:rechargeable li-ion battery inside 5 Light mode:steady/flash/2 sides/patrol/pulse Includes:Led rear light + clamp + usb calbe Weight:50/77g Feature:usb rechargeable/max.30hrs run time/tool-free mounting/water resistant Show More