Bao Core BXT External Rechargeable Backup Extended Battery Charger Pack Case Cover for Apple iPhone 5 5S 5C (2600mAh,Rose) Ergonomic,form-fitting,fully protective ultra-resistant case-and-battery-in-one for your iPhone It allows you to charge and sync your phone while refilling your battery at the same time Intergrate power switch allows you to switch on/off the battery case,Only use the battery when you need it State-of-the-art battery technology extends the life of your iPhone for hours Rechargeable for over 500 cycles,Built-in short circuit and over-charge protection.Safety first