-Portable and practical -Multiple device charging -Faster charging Powerfully stylish The modern design and handy strap of this spare battery pack make charging on the run easy. And it comes in a choice of two colors that make this portable powerhouse a stunning counterpart to your Galaxy S8 or S8+. Back in action fast Go even longer between charges with this spare battery pack. It charges itself fast, just like it charges your phone, so keeping powered up is a breeze. And with a handy strap, it's easy to charge on the go. SPECIFICATIONS Battery Capacity: 5,100 mAh Typical Capacity (Normal Charge): 3,100mAh , 15.5Wh Typical Capacity (Fast Charge): 1,700mAh (9V) , 15.3Wh (9V) Compatibility Compatible Models: Universal General Feature Features: Battery Pack, USB Type C, FAST CHARGE IN&OUT Packaging Contents: Battery Pack, Combo Cable, Quick Start Guide Physical specification Cable Length: 0.2 m Dimension (WxHxD): 74.2 x 132.3 x 13.8 mm Weight: 151.3 g Power Input Voltage (Max, Normal Charge): 5 V Input Voltage (Max, Fast Charge): 9 V Input Current (Max, Normal Charge): 2 A Input Current (Max, Fast Charge): 1.67 A Output Voltage (Max, Normal Charge): 5 V Output Voltage (Max, Fast Charge): 9 V Output Current (Max, Normal Charge): 2 A Output Current (Max, Fast Charge): 1.67