3000mAh slimline power bank. Allows you to charge on the go with a powerful, yet compact design. Features a rechargeable lithium battery, 1 standard USB (universal serial bus) port, LED (light emitting diode) battery status indicator, auto shut-off capability, and 1 micro USB to USB charging cable. Provides up to 18 hours of extra talk time. Ideal to keep in a purse, car, gym bag, or backpack for whenever you need to charge any USB device.