Item No.: SL-BF055
4 light modes (strong, weak, slow flash, strobe)
Material: aluminum alloy + engineering plastic
LED: 3  super bright white LED
Use Micro USB cable Rechargeable 
Light size:4.5x4.5x3.5cm
USB cable length: about 200 mm
Battery: rechargeable li-polymer battery (650MAH 3.7V)
Charged by connecting the Micro USB cable to computer or plugging phone charger to wall power socket