Material:PC+TPU Color:White Battery:polymer lithium-ion battery Capacity:2500mAh Input:5V 1A Output:5V 1A Type: for iPhone 7/8 Usams Battery Case Millie Series 2500mAh for Apple iPhone 7/8 White Features: Built in smart chip, providing powerful protective performance PC+TPU dual protecting your phone with soft side, shock relief Ultra-thin design, very light and convenient to carry, perfect dimensions. Easy installation and removal, 360º Protective and powerful. Convenient stand clip to view your device at the perfect angle. Works as both an extended battery set and a protective case. 4 led indicators display the battery status, know before you go. External battery charger case for iPhone 7/8