This is what BMW and European motorcycle riders have been asking for and here it is. A 2.1 amp dual USB charger . A bit smaller than usb chargers for cigarette lighters. It comes with a weatherproof rubber cap. Lights up blue when plugged into a power source.

Product Dimensions: width: 3.10, length: 4.60, depth: 1.20

Input 12-24 volts. Output 5 volts 4.2 amps

Power and charge two mobile devices simultaneously. Total power of both ports is up to 2.1 Amps.

Two USB ports. Water resistant weather cap.

Charges up to 2A when ports are used individually. Use this plug along with your device's own USB cable to charge.

1.4.2A touch type USB charge

2.new touch type USB socket

3.Dual ports usb car charge

4.The 12V USB outlet is equipped with a power control switch. Turn off the switch when the USB socket is not in use, which can save the power of the vehicle battery.