... .5mm 3.Weight:105g, glasses appearance 4.1 year warranty KAYO Solar External Battery Case for iPhone 4G&iPhone 4S1. External Battery Case for iPhone 4G ... part of the back for 3 seconds and then release the button, it will finish charging for iPhone 4.When charging external ... throw it away randomly. KAYO Solar Power Bank for iPhone 4/4S, iPhone case, with solar panels, glasses appearance, 1700mAh 5.0V, ...