Bluetooth headset folding card headset | Audio

Model: 450BT-BAudio input: 3.5mm jack typeSpeaker horn: 40mm steel magnetSensitivity: 115±3dBWithstand power: 25mWFrequency range: 20-20KHzImpedance: 24ΩMicrophone: supportFrequency range: 30Hz-16KHzSensitivity: -58±3dBBluetooth version: V5.0Transmission protocol: EDR+A2DPTransmission coding: SBCNoise reduction technology: DSP+AECFrequency range:...