... ,Made for iphone4,3G.3GS,touch 2,Patent safety design: Multi-safety design for overcharging, temperature, short- circuit….. 3,LED light ... 4,Non-slip grip design Product Modle:T4 Color :white Battery:Lithium-polymer battery Capacity ... pick up phone calls. Silica gel material, special shape design. Charging Anti-skid designThere is a micro USB port in the side ...