Specifications Lifetime: 10 years Solar panel power: 6V 1W Size: 4.92 * 4.92 * 1.97 inches Irradiation distance: 10ft or more Conversion of energy efficiency: 17% Waterproof red LED: 4PCS, Waterproof level: IP65 Single illumination: 20000-25000 MCD Lithium battery: 3.7V 2000MAH Charging time: >6 hours Working Principle Solar Powered: No power supply or wires are required,automatically charges itself. Auto on at night and auto off at sunrise. Solar panel absorbs sun rays more efficient and slanted solar panel cannot be covered by Snow. 4 excellent LED lights grants 1/2 Mile range of protection. Suggest use 4 units for 360 Degree Protection of your property. Environmental friendly and Safe. Avoid the way of poisons or traps which harm wildlife,domestic animals and People.Easy Installation Mount it on Anywhere with screws or stick it on the surface of iron material by the built-in magnet. Suggests: Mount it at the eye level of the pest you want to repel, facing the entryways to the area you want to protect.