Here comes an iPhone 4 power pack that snaps inconspicuously onto the back of the iPhone 4, giving you extra hours of talk time, standby time, Internet and audio/video playback. This iPhone 4 backup power pack is a great emergency helper, which doubles up as a USB gadget charger or power during emergency as it has a USB output, which allows you to charge or power up another USB-powered or chargeable gadget.
As shown in the picture, the iPhone 4 power pack can be used to power up a USB LED lamp, which shines your way out during emergency. The power pack does not add to much bulkiness to your iPhone. It simply adds as little as a few millimeters of thickness, which shall retain more or less the original thickness that will go comfortably into your jeans’ pocket.
The iPhone 4 power pack is able to provide up to 6.5 hours of talk time, 390 hours of standby time, Internet use of 6.5 hours on 3G and 8 hours over WiFi and up to 31 hours of audio and 9 hours of video playback. You can get it from Efo for $30 each.
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Tags: useful accessory