Feature:Used to charge mobile phone, MP3, pad, or other USB-charged device.Double USB female port, easily charge device via USB charging cable.You can place the panel in the sun and use it to directly charge your device.Great for outdoor cycling, climbing, hiking, camping, traveling, etc. Specifications:ISC: 3.33Voc: 20VVpmax:18VPower: 25WIpmax: 2.77AOutput: 5V/18VSize: 540*280*2.5mmWaterproof rate: IP65Conversion rate: 19.6-20%USB port quantity: DoubleMaterial: Monocrystalline silicon cellSuitable for: Cycling, Climbing, Hiking, Camping, Traveling, etc.With Timer and light sensor, it could work for solar light system(Only For off-Grid PV Solar System):-For 10A 12V Pv System: 120W Solar Panel, 12V Lead-acid Battery, 21V for Max input Voltage.-For 10A 24V Pv System: 240W Solar Panel, 24V Lead-acid Battery, 42V for Max input Voltage. Package includes:1X 25W Solar Panel1X 30cm DC Male Cable1X Crocodile Clip1X Car Charger1X User Manual