earTECH black in-ear headphones, with. mini jack

Ergonomic earTECH headphones, stereo sound, with microphone, volume controls and third multifunction button. Music and Calls: Wide frequency range for optimal music and voice calling experience. Compatibility guarantee with Apple, Android and Windows devices. Form factor: In-ear. Color: Black / Black. Length: Cable 1.2m. Connector: 3.5mm mini-jack. Frequency: 20Hz - 20Khz. Impedance: 32 Ohms +-15%. Microphone: -42dB +-3dB.