Features:
Lighter, larger capacity
Support playing while charging, no more interruption
Stable and precise for a much better gaming experience
Grade A polymer lithium battery, which is safer than the ordinary lithium battery

Specs: 
Power Bank Charger Case 
Color: Black 
Material: Battery: Polymer Lithium Ion Battery 
Shell: Plastic + Aluminum Alloy 
Size: Power Bank: 141x70x10mm / 5.56 "x 2.74" x 0.39 " 
Solves: 44x16x22mm / 1.76" x 0.88 "x 0.65" 
Compatible Model: for iPhone X /6/7/8/X/6P/7P/8P
Input: DC 5v 0.5A-1.5A 
Output: DC 5 v 1A 

Three Variants:
          For iPhone 8P/7P/6P : 5.5inch ,8000mAh
          For iPhone 8/7/6 : 4.7inch ,5000mAh
          For iPhone X : 5.8inch ,6000mAh

Includes: 
1 x Power Bank Charger Case 
2 x Controller Assist Tool 
1 x User Manual