Sme's rechargeable hand warmer and flashlight features dual temperature settings; high 118.4 f, low 39.2 f, built-in led light and a rechargeable 4400mah li-ion battery.It has usb output to charge portable devices and provides short circuit, overcharge and over discharge protection.The led light features a blinker mode and charge time is three hours.Included is a usb charging cable.Type: Hand Warmer w/LightFunction: WarmthBattery: Lithium IonColor: Silver w/Green AccentCompatible With: USB Ports