MiLi MiLi-HI-C23BLK MiLi Power Spring 4 - Black & Black (Thinnest ever iPhone case with battery charger that nearly doubles the life of your iPhone's battery)

Description

• The MiLi Power Spring 4 is the world’s thinnest iPhone 4 case with battery charger that doubles the life of your battery.
• Say goodbye to chunky and clumpy additions to your iPhone 4 that can make it almost impossible for it to fit in your back pocket.
• The MiLi Power Sping 4's sleek form fitting design will also protect you iPhone 4 from scratches.
• It even prevents your iPhone 4 from the dreaded "Death Grip" reception problem.

Product Specification:

• Output:5V-0.5A
• Capacity:1600mAh(Li-Pol)
• Product Compatibility: iPhone 4
• Standby Time: Up to 390 hours
• Talk Time: Up to 6.5 hrs on 3G/Up to 13.5 hrs on 2G
• Internet Use: Up to 6.5 hrs on 3G/Up to 8 hrs on Wi-Fi
• Audio Play: Up to 31 hrs
• Video Play: Up to 9 hrs