Skullcandy 50/50 Earphone with Mic for Ipod/Iphone/Ipad-Rasta 1. Speaker Diameter: 11mm. 2. Ergonomic design for the ultimate fit. 3. Mic3 delivers complete control of any IOS device. 4. 3 Silicone Gel Sizes. 5. Nylon/Mesh Carry Case.