Flexible design and comfortable. tone, convenient for washing away dirt and debris, with a stainless steel rotating clip positioned 360 degrees. The Microphone with an outside interposer, arranged in pairs with earphone can keep secret and fit for particular occasion. The tone is clear and it is durable. Product parameter Bugle union: diameter: 36mm Rating power: 1w Impedance: 8Ω Microphone union: Sensitive: -58db Impedance: 2.2KΩ