Battery Pack for iPhone4 OS-iP4BP-086 Pass:CE,RoHs Capacity:1500mAh More than 1X your battery! Talk Time: Up to additional5 hours ( 3G Network) Up to additional9 hours (2G Network) Internet Use: Up to additional 4.5 hours(3G) Up to additional 5.5 hours(2G) Standby Time: up to additional 22 hours Video Playback: up to additional6 hours Specifications: 1. Weight: 58g 2.Capacity:1500mAh 3.Cell type: Li-Polymer battery 4.Dimension:126*61*16(mm) 5.Output Voltage:5V 6.Output Current:500 mA max7.Cycle life:500 times 8.Pass CE, ROHS FourLED lights indication: Press on the button to indicate real power in Battery Case LED light from left to righ 1st LED light shine power <25%2nd LED light shine power 25--65%3st LED light shine power 65-100% Sync When using Battery Case with your iPhone,you cna sync your iPhone to itunes without removing Battery Case Safety Quality ControlWe choose grad "A" cells, Janpanese or Taiwanese made protection IC circuit and other highest quality raw materials. We conduct 16 tests on each stage of assembling process startion from every parts, work-in-progress, to final productIf you interested in our products,please go to our website: w-w-w.osmartchina.com to get more informations.We look forward to have long-termbusiness with you Welcome to feel free to contact us!