1.solar energy battery:imported polycrystallline silicon solar energy battery sets. 2.light source:one high brightness LED. 3.storage battery:one 1.2v 600mah rechargeable NI-MH battery. 4.color of the light: white, green, yellow, blue, red, colors are at customer's option. 5.environment temperature: -2.0℃--70℃. 6.working time:up 8 hours.