wired headset

Audio input: 3.5mm socket Speaker speaker: 40mm steel magnetic Speaker sensitivity: 115±3dB Speaker withstand power: 25mW Speaker frequency range: 20-20KHzImpedance: 240 Microphone: Support Microphone frequency range: 30Hz-16KHz Microphone sensitivity: -58±3dB Transmission protocol: EDR+A2DP Transmission code: SBC Noise Reduction Technology: DSP+AEC