1. Charging for your car battery, notebook computer or other 12V rechargeable battery designed with the solar power. 2. , environmental and safe. 3. Easy to use. Two elastic straps of the back, convenient to set in the sun visor, you can sunshade and charge the car battery at the same time. 4. Great for outdoor work or travel or camping training. Note: 1. Be sure to note when using the product is negative and the positive must be consistent with the charging products 2. If no professionals, please do not go trying to change the product 3. The products are used to trickle charge the car battery, it is mainly used to supplement the power that loss by the car battery self-discharge, so you can always start the car. Do not try to to no battery charging or charge the battery itself is shortage. Power Consumption:12v 4.5w In perfect condition: Output Voltage:Over 18V DC Output Current:Over 250mA ( in 10000LUX) Colour:Black Material:single crystal Size:320x120x6mm Package Contents: 1 x 4.5w Solar Panel 1 x The Battery Charging Clip Line 1 x Car Charger Lighter Plug 2 x suction cup base 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.