... polycrystalline silicon,60WBattery:specilized for solar,80AH,12VController:time-control,over-current,over-voltage,temperature protection,humidity protection,12V/10ABattery box:water-proof5Functionadjustable ... protection No pollution, no noise, no radiation 3.17% high conversion rate solar panel makes the solar energy be used ... control after the first set. Solar Street Light with high quality