Kanen iP600 stylish stereo sound headset headphone, comfortable and compact to wear. With it, you can enjoy the wonderful stereo music. The built-in microphone, makes you easy to answer or hang up the phone call. An excellent headphone, you deserve to own it./ Features: * Brand new and stylish design, comfortable to wear * Listen to music in stereo sound * Built-in rechargeable battery * Built-in microphone, can answer or hang up the phone call. * Headphone Driver unit: 36mm * Headphone Frequency range: 20Hz~20kHz * Headphone Sensitivity: 104+/-3dB * Headphone Impedence: 32ohm +/- 15% * Length of the line: 1.2m+/- 10% * Jack: 3.5mm gold-plated jack * Microphone size: 4.0 x 1.5mm * Microphone sensitivity: -42+/- 4dB * Microphone impedence: