The Thinnest for iPhone4/4s Power Pack (GT-100)

1800mAh
13.2mm
52g
Product advantages
1. Ultra-thin, 1800mAh protective battery case provides your iPhone with up to 90% extra battery life. It's the thinnest iPhone power bank in the world and you won't believe there's a battery inside.
2. Convenient: Charge anywhere by flipping a switch. Use the LED indicator to check battery levels before you head out and flip the standby switch when you're ready to use the power pack's battery or when you need to recharge your iPhone while on-the-go. You can also simultaneously charge your iPhone and power pack together with the included micro-USB cable.
3. Dual-injected & impact-resistant: The hard-shell frosted cases don't interfere with any iPhone features or functionality, because you can easily access all of the controls and especially the reasonable design of the camera hole which enables you take photos as usual.
4. Innovative design.
With a new innovative design, the power pack is a pocket-sized backup battery and a convenient that allows the iPhone to be viewed while charging! It is fashionable with colorful frosted appearance,
Special high-output battery allows for ultra-fast charging. The boost charges at up to twice the current as traditional batteries.