M45 Promenade universal wired earphones with microphone 3.5mm jack with 1.2m high elastic TPE cable one button operation control 1. Speaker: 10mm. 2. Impedance: 16Ω±15%. 3. Frequency response: 20~20000Hz. 4. Sensitivity: 98dB±3dB. 5. Audio plug: Ø3.5mm. Weight: 14g. 6. Earphones cable: TPE high elastic cable with enameled wire, cable length: 1.2m. 7. Microphone: controller with mic. 8. Wire control: Functional one-button operation controls music playback + answering calls, up and down songs, adapts to control Apple and Android.