Free to use the light becasue it get power from sunlight
Easy to install, no need wiring
Weather proof

Material : Iron, Polycrystalline silicon solar panel
Size: 160mm X 600mm X800mm
Battery watt: 0.6W
Solar panel life: 20 years
Battery life: 3 years , can be replace then
Battery: Rechargeable battery
Working hours: 3-4 working days without any new power supply , that is at least 24 hours when it is cloudy or rainy,
Charge hours: one day when it is summer. It depends on the specific sunshine.
Warranty : 1 year