... Compatible with iphone 3.Light 4.Convenient 5.Safe and reliable Lizo 2100mAh power bank for ... 1. External battery for iPhone4.2. Small, convenient, easy to use, high capacity.3. Use ... iphone.3. Unique holder design, very simple, very light and convenient to carry and use your iphone when charging, ... : protection for overcharge, over discharge, overload and short circuit protection.5. This battery is the ...