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Specification: Machine type: Plastic flat ear type Plug: 3.5 Sound production principle: dynamic coil type Horn diameter: 13( φ Mm) Ordinary horn Microphone: MIC-42 ± 2dB (dB) Wire length: 1.2 ± 0.03m Horn impedance: 32 Ω Sensitivity: 102 ± 3dB (dB) Horn power: 3-5 MW Frequency response range: 20-20000Hz (Hz) Product function: Click play/pause/answer, long press for 1 second to hang up, long press for 3 seconds to reject, double-click play button, next song, three clicks play button, previous song tuning Product material: TPE wire material, ABS material