KIKI 5500 mAh Portable Rechargeable Backup Battery Case for Galaxy Note 4 Charger Charging Powerbank Slim Cover + Free KIKI Touch Pen (White) Designed for Samsung Galaxy Note 4 Capacity 5500 mAh lithium polymer battery Sync function - Full access to all buttons, ports and control supports simultaneous charging of the Battery Case and Note 4 + Free Gift KIKI Touch Pen