B.Duck K6+ Battery Case for iPhone 6Plus/6sPlus/7Plus/8Plus Power Bank Charging Case for iPhone 6Plus/6sPlus/7Plus/8Plus 3700 mAh Battery Charger Back Case Cover
 
Features:
Unique Design 
It is not only a protective case but also a power bank. Transmitting data while fast charging.
 
Camera Protective & Tightly Edge
The distance between camera and case is exactly right to protect the camera. Tight edge makes it not easy to loose and not weaken the signal.
 
Soft Lighting Connector
Curved angle of the plug can be up to 90°and protect it from crack.
 
Protection System
Built-in short circuit protection, input over current protection ,input the counter-attack protection, battery too blunt protection, hardware level protection and output over voltage protection to protect the back case and phone. 
 
Light & Portable
You can charge the phone without removing the case and portable to take while going out. 
 
Built-in Magnetic Metal Plate
Work with magnetic car mount and absorb car bracket directly. 
 
Specification:
Item: K6+
Battery: Polymer Lithium Battery
Capacity: 3700mAh
Input: 5V 1.2V 
Output: 5V 1.2V
Material: TPU+PC
Application: for iPhone 6Plus/6sPlus/7Plus/8Plus
Item size: 16.1 * 8 * 1.2cm / 6.34 * 3.15 * 0.47in(L * W * H)
Item weight: Approx. 115g / 4.06oz
Package size: 18.9 * 10 * 2cm / 7.44 * 4.21 * 0.71in(L * W * H)
Package weight: 183g / 6.46oz
 
Package list:
1 * Battery Charger Case
1 * Use Manual(English & Chinese)