Features: 1. External battery charger case with the function of back cover case and mobile power bank,portable and convenient. 2. High security and stability with built-in short circuit and over-charging protection. 3. Integrated power switch allows to switch on/off the battery charger case easily. 4. Intelligent charging system with an integrated 4-light LED status indication for fast charging. 5. Equipped with an extra USB interface to charge other phone or pad simultaneously. 6. It has no influence on sync data transmission while charging simultaneously. 7. With built-in rechargeable li-polymer battery,allowing recyclable use. 8. With convenient retractable backup stand design for visual needs. Specifications: 1. Type:Rechargeable Battery Charger Case 2. Compatibility:for iPhone 6 6s 6 plus 6s plus iPhone 7 7 plus 3. Material:Plastic 4. Battery Type:Rechargeable Li-polymer Battery 5. Capacity:3000-2500mAh 6. Input:DC5V 7. Output:DC5V 8. Colors:Black/Silver/Gold/Rose gold/Red/Blue