ITEM NAME:Universal 12V DC - AC 220V Car Power Inverter Adapter Converter USB Plug Ch A7V0 Product Description Specifications: Input voltage : DC 12V/24V Output voltage :220V USB output:6V Output current: 500mA Light color: red ,green (Random) Instruction: 1. This power switch equipment is to all the kinds of mobile phonechargers, cant be used for another purpose 2. This product has the safeguard in currency, shortcircuit, over loading 3. Plug this product into the cigarette socket 4. Make sure the power indicator is bright 5. Plug the mobile phone charger into this socket of this product 6. This product is used for mobile phone, Personal Handy Phone System, travelcharger. Can't be used to the ironheart transformer. Caution: 1. Some chargers with connector plugs reversely will not work, pleasecounterchange the direction. 2. This product is specially used for cathode grounded car, cant be used foranode grounded car. 3. This product is specially to DC 12V-24V car. Package includes: 1 x USB Power Converter.1 x USB Power Converter. Make sure the power indicator is bright. USB output:6V. Plug this product into the cigarette socket. This product is specially to DC 12V-24V car. This product is specially used for cathode grounded car, cant be used foranode grounded car.