... . 1.earphones used for MP3,MP4,CD,phone,computer good design and so on 2. Noise cancelling ... be made 3:How is your earphone sound quality ?For our metal earphone ,the most character is that ... requirements . 4:Hi,Man,can you make your earphone to work with Ipod,Iphone and another Mobilphone ? ... reference Color Requirements :We can make every part of earphone for different color,such as white ,black ,red ...