... case for iphone 4/4S,battery case for iphone ,speaker for iphone,3d case for iphone2,Features: (1)3in1 power case for iphone 4/4S: with protecter case ... 75%;If four lights,it means product power is 100%4,Battery cells type (1), polymer lithium-ion batteries, standard voltage 3 ... (9)Storage temperature: 65 °C ~ 20 °C Hot sale Power case for iphone with speaker function battery case for iphone