Bell"s LED Flashlight with USB port provides up to 2 hours of use with a pre-charged sealed battery. Recharge by simply plugging into a 12 Volt cigarette lighter or 12 Volt power socket. Includes battery overcharge protection, power on LED indicator, and fused plug protection. USB power port converts 12 Volt power source into a USB 5 Volt power port. Input: 12 Volts, output: USB 5 Volt 1000mA (maximum) power port. Use: USB power port to play, charge or save battery power on most USB devices including MP3 players, phones and more.