1. Real-time voltage detection, intelligent current identification, safer driving.2. This product is only applicable to motorcycles of European specifications.3. Simultaneous charging with dual USB ports, intelligent output 4.2A.4. Built-in 6-fold safety protection not only improves charging efficiency, but also can effectively control overload and heat, and better protect your car and charging equipment.5. Parameters:Input voltage: 12-24 (V)Output voltage: 5 (V)Output current: 4200 (mA)Working temperature: -20-60 degrees CelsiusOutput interface: dual USB

http://olla.gr/german-eu-plug-special-motorcycle-elbow-charger-dual-usb-voltmeter-4.2a-charger-shell-color-black-green-light/