Smiledrive Back Cover for iPhone 4, iPhone 4S  (Black, Charging Case)

This is the smart case for the smartest phone in the town. The protective case not only increases the durability of your phone but also charges your phone in the time of need. The case has 1900 mAH lithium battery in built so that you can talk, email, chat, listen to music and use your apps for longer. Features: Study design, fashion, energy-supply for business and outdoor activities, High quality replacement battery, It is made of high quality and durable material, Lightweight, compact and easy to carry, Portable and easy to use, The battery is in good working condition, More time to rock, talk, surf and send, Security guarantee: short-charge protection, anti-discharger protection, Specifications: Battery type: Lithium-ion batterty , Capacity:1900mAh, Output Voltage: 5V, Output Current: 500mA, Cycle Life: 500times, Standy Time: Up to 230 hours, Talk Time: Up to 6 hours, Intenet Use: Up to 5.5 hours on 3G, Up to 8 hours on Wi-Fi, Audio Playback: Up to 30 hours, Video Playback: Up to 8 hours, Dimension: 12.5 x 6.3 x 1.6cm (L x W x H), Weight: 110g / 3.88oz, Color : Black, Compatible with: iPhone 4/4S, Package Includes: 1 x External Battery Charger for iPhone 4/4S.