Features: 1) Environmentally safe and economic way to collect energy2) Small, portable and lightweight design3) Can recharge mobile phones through solar panels or extra battery pack4) Average recharging time is approximately three hours5) The built-in lithium battery with 500mAh can support approximately 20 - 40 minutes of talk time depending on the model of your mobile phone6) Unit dimensions: 100 x 53 x 22mm7) Cell phones instant power on 8) Can be charged anywhere, no outlet needed 9) Adopts battery-on-board technology 10) Three charging ways: solar, car, outletInner packing: 1pc with 4 plugs (Motorola, Nokia, Ericsson, Samsung) in gift box included.Outer packing: 36pcs/ctnCarton dimensions: 39 x 36 x 52cmG.W.: 12kg producing area:China payment:T/T or L/C supplying capacity:400,000pcs per month