iPhone4 iPhone4S 4000mAh Removable External Charging Case Wireless Charging Power Bank Cordless Backup Battery Power Case Lithium Polymer Battery Charger Protective Skin for Apple iPhone 4/4S 1. iPhone wireless charging Neither NFC nor Qi charging board required. 2. Razor thin protective case, but also charging iPhone using normal USB cable 3. Charging case & battery charger & wireless charging & protective case. 4. Digital blue LCD display, accurate power clearly. No small LED any more. 5. Exclusive charging-on-discharging ability