MP3 shell 1, Material: Aluminum Alloy 2, Size: Length: 4.5cm, Width: 3cm, thickness: 0.8cm 3 colors: red, black, green, et The specification:1, Material: Aluminum Alloy2, Size: Length: 4.5cm, Width: 3cm, thickness: 0.8cm3 colors: red, black, green, etc., or as your demand.4, Surface treatment: anodizing, polishing, light, etc.5, used as MP3 case6, the Cikuan MP3 housing, top quality with criminal ...