Description Imagine you are on a business trip, out working, or in a location with an emergency blackout and your iPhone's battery power is nearly depleted. You are temporarily unable to find a power source to recharge, so you cannot contact anyone and your work efficiency is greatly affected. The i-Power 105 can help you--with its built-in 1050mAh lithium battery to store power, you can replenish your iPhone's power anytime, anywhere. Even if you are outdoors or in a blackout, i-Power 105 enables you to charge your iPhone and keep on working. Interface For iPhone 3G, 3GS, and 4 with Apple's exclusive 30-pin interface Charge with Micro USB interface Capacity 1050mAh Data Transfer Rate Charge Time: 2.5-3.5 hours OS Supported N/A Power Supply Input Voltage: 5V DC, max 500mA Output Voltage: 5V DC, max 500 mA Power Consumption 1050mAh Dimensions 50 x 58 x 14 mm (1.97 x 2.28 x 0.55 in) Weight 45 g (0.1 lb) Environment ‧ Operation Temperatures ‧ Highest: 45°C~70°C ‧ Lowest: -5°C ~ -10°C