Item No.:SL-BR094 USB cycling taillight
Material:ABS+Aluminum
Bulb:Super bright COB
Lumen:80 lumens
Size:7.2*2cm
Weight:30g
Battery:3.7V 280mAh rechargeable battery
Function:Low-Middle-High-Weak flash-flash-Strobe-off
Change to flash model need double click
Press 2 seconds will be auto off,It come with memeory function
Rotating 360 degree and comes with clip 
Including the rubber ring and USB cable