Ultra-small design 5.5 cm * 2.3 cm (the largest part) USB interface output, suitable for most digital products The design is novel and beautiful. Suitable for mobile phones, MP3, PDA, Bluetooth headsets, digital cameras Etc. Insert a USB car charger on the car cigarette lighter, convert the car 12V voltage to DC 5V 1A, and connect the USB charging cable to power and charge various GPS, mobile phones, MP3, iPod and iPhone.