Essential Gomadic AC /DC Charge Accessory Bundle for the HTC EVO 4G. Kit includes the Gomadic Home and Car Chargers at a Money Saving Price. Based on TipExchange Technology This Gomadic Car charger has a wide input voltage range of 12-24vDC to support all vehicle charging ports. Works in cars, trucks, planes, boat, RVs and more (both domestic and international). Available output current is an impressive 10W/2A . (Twice most competing products!) Gomadic TipExchange Technology protects your investment by allowing you to change/upgrade either charger by simply swapping the physical charging tip. (Charging tips for HTC EVO 4G included with additional tips sold separately). Gomadic Wall Charger is built to support worldwide voltage input levels ranging from 100-240vAC /50-60 Hz. High output 10W /2A transformer provides output voltage and resistor configuration specific to the HTC EVO 4G. Specification: Wall Charger: Dimensions: (2.0 X 1.75), Cable Length: (50), Power Input: (110-240vAC), Output Power: (HTC EVO 4G Specific); Car Charger; Dimensions: (1.75 X 0.5), Cable Length: (42), Power Input: (12-24vDC); Output Power: (HTC EVO 4G Specific). Both Gomadic car and wall chargers employ state of the art, advanced internal circuitry to protect HTC EVO 4G from power surges, overcharging and short-circuiting.