1. Speaker: 10mm. 2. Impedance: 16Ω±15%. 3. Frequency response: 20~20000Hz. 4. Sensitivity: 92dB±3dB. 5. Audio plug: Ø3.5mm. Weight: 13g. 6. Earphones cable: TPE high elastic wire with enameled wire, wire length: 1.2m. 7. Microphone: controller with microphone. 8. Wire control: functional one-button operation controls music playback + answering calls, up and down songs, adapting to control Apple and Android.