This small USB (Universal Serial Bus) Car Charger means that you can replace your cigarette socket completely through a USB (Universal Serial Bus) port. There plugged in, it loads all MP3 players, which gets their power from the USB (Universal Serial Bus) port of a computer. Uncomplicated, it works with all major players with built-in rechargeable battery & can be due to the size of a pencil eraser permanently Remain in lighter socket. Or charge your device with the USB (Universal Serial Bus) charging/ Sync cable via the PC with USB (Universal Serial Bus) interface.