MobilePower 3002 MAMBA 250 Strip Inverter, 250-watt Input voltage: 12v dc with output voltage and rated power: 120v ac 250 watt and maximum peak power: 500w - 0.3 Seconds Direct short circuit protection and ground short circuit protection of outdoor use Three ac receptacles with protective dust and moisture covers/shields and two USB power ports output voltage and rated amps: 5v - 2a 12V power input cable length: 3 ft. Long Compatible with iPhone 4, iPhone 3gs/3g and all iPod