Acuvar Power Bank 13000mAh Dual-Port Portable Charger With LED Battery Life Indicator and Built-in Flash Light for Microsoft Surface 3, Surface Pro 3, Surface 2, Surface Pro 2, Surface, Surface RT & Many more tablets Works with virtually all USB powered digital devices including SmartPhones, Tablets, Phablets, etc. 2 USB ports so you can charge two devices at the same time High-Capacity and High-Speed Charging with 13000mAh Bright Easy-to-Read LED Screen that displays Battery Life percentage Dimensions: 5.5 x 2.5 x 1 Comes with a built in Flash Light