... panels(18v) Bulb: 3PCS Super brightness 12V with 1 USB output can charge for MP3,MP4, cellphone etc Product parameter ... 2W)led lamp cable length:5 meters 3pcs lamp holderOutput:USB 5V, can charge for MP3,MP4, cellphone etcInput: DC ... with 3pcs 2w bulbs at the same time)and 1 USB outputCharging time: 6-8 hours by solar panelLED lighting ... 420MM G.W.: 27KGS6 sets/carton solar lighting system for home use