... Intelligent switch 1,product 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 ... 75%;If four lights,it means product power is 100%4,Battery cells type (1), polymer lithium-ion batteries, standard voltage 3 ...