Kensington PowerBolt 5.2A 26W Dual USB Port Car Charger (K38029WW) Provides maximum charge for up to two mobile devices at 2.6 AMPs (13 watts) including the Microsoft Surface 3, tablets and smartphones Power Whiz automatically detects the type of device you are charging to provide a faster, safer charge Blue LED indicates the charger is powered and ready for a device Compact, low-profile design blends into any vehicle interior