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+. | 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. | With a battery Capacity of 5100 mAh this Samsung Power bank has a universal compatibility. It includes a battery pack, USB type C and a Quick Star Guide so you know any specifications of the item. | Power specifications: - Input Voltage (Max, Normal Charge): 5V. - Input Voltage (Max, Fast Charge): 9V. - Input Current (Max, Normal charge): 2A. -Input Current (max, Fast Charge): 1.67A. - Output Voltage (Max, Normal Charge): 5V. - Output Voltage (Max, Fast Charge): 9V. - Output Current (Max, Normal Charge): 2 A. - Output Current (Max, Fast Charge): 1.67 A. | Physical Specifications: - Cable Length: 0.2 m. - Dimension (WxHxD): 74.2 x 132.3 x 13.8 mm. - Weight: 151.3 g.