Solar panel: 12v/3.5W, more than 20year life time
Size: Diameter 800MM
Battery: High temperature Li-ion battery, more than 3years life time
LED: Superbright LED, visibility distance>800meters
Controll mode: Light controlled or intelligentized
Work time: It can work 72 hours after fully charging.
Work temperature: -20-+70 centigrade
Protection level: IP65
Other: It can be charged by DC 12V power