Xtreme XBB8-0141 is a portable power bank designed to charge electronic devices with its 4400 mAh battery capacity. It features a USB port for charging devices and a built-in flashlight activated by holding the power button for 3 seconds. The flashlight can be turned off by holding the power button again for 3 seconds. The device requires charging before first use and should not be left charging overnight. Please refer to local guidelines for proper battery disposal when the battery is depleted.