... series: 3in1 power 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,emergency charger and ... : 3 ~ 5 hours (8)Working temperature: °C ~ 50 °C (9)Storage temperature: 65 °C ~ 20 °C Hot sale Power case for iphone with speaker ...