S1939 Doctor Who Tardis Universal INNOVE 12000 mAh Portable USB External Battery Charger Power Bank For Mobile Phones Special power bank with unique graphic print design. This power bank is for everyday use and it is perfect gift for your special someone in every occasion. Four LED indicators show you the energy state of external battery. Protection design : Anti-overcharge, over-discharge prevention, anti over current, short circuit. Easily fit into your carry bag and charge your mobile device anytime and anywhere. UNIVERSAL COMPATIBILITY.