Acuvar Power Bank 7200mAh Portable Dual USB Port Backup Battery Charger with Built-in Flash Light For Nokia Lumia 920, Nokia Lumia 820, Nokia 808 PureView, Nokia Lumia 900, Nokia Lumia 810, Nokia Lumia 822, Nokia Lumia 521 / 520 and other digital devices High Capacity 7200mAh Power Bank with a built in Flash Light. Double tap the power button To turn on / off built in flashlight Dual USB Port: Charge TWO Devices At The Same Time Universal Compatibility - For All USB Devices 4.5 inches x 2.5 inches x 1 inch - Portable to fit in any pocket or handbag