No batteries needed-cranking for power generation.
3 lighting modes:1LED on-3LEDs on-3+2LEDs flash-3+2LEDs off.Stylish yet Robust Design makes it ideal for outdoor activeities,auto and home emeragencies.
1 minute of cranking provides about 30minutes of continuous bright light.
Product size:142*62*42mm
clamshell package:48pcs/ctn
Meas/ctn:43.5*27*50cm 
G.W./N.W.:11.09.0KGS