The solar panel converts sunlight energy into electricity during the day. The photocell automatically turns the light on at night with the electricity stored in the batteries. It requires no wiring， because it runs off the sunlight energy to recharge the batteries so there is no cost to run the solar cap.Specifications:1.Waterproof2.LED: 3 LED3.Solar panel: 0.26 W. 17% efficiency.4.Battery: AA 1.2 V 1200 mAh (NOT INCLUDED)5.No cables， & easy to install6.LED span life: 100000 Hrs7.Solar charging time: 8 Hrs8.Auto-light at night9.Li-ion battery span life: 500 circles10.Solar panel span life: more than 5 years11.Light type：white lightInstruction:This unit has intelligent light control switch antomatic control productsdaily work，when the ray of light is more than 100LUX ，solar panels will charge the battery ，and when the night falls or ray of light is lower than 100-10LUX，this lamp will automatic light ，no need human operate any more . 1.Turn the switch to "ON" postion ，the switch is located at he buttom base of solar panel ，charge the solar product by it under direct sunshine for at least 4 hours. 2，The light will work automatically once the switch is in "ON" position ，It willautomatically charge under direct sunshine in the day time and illuminate at night.Package included:1 x solar light3 x screws1 x Mounting Bracket