Lots of options to light your way at night with plenty of battery sizer options depending on how long you need a charge to last.

Mounting Placement: Handlebar/helmet
Certification: RosH/CE/CCC
LED: L2 / T6 / R3
Voltage: 5V / 1A
Capacitance: 2000mAh / 1200mAh
Weight: 150g / 130g
Size: 84*49*29mm
Color: Black / Silver Black
Bike Light: Bike Light usb
Mount: 360 Rotate Holder
Charge: USB Rechargeable