Wired 3.5-head input Bluetooth earphones pink version A28

Equipment parameters
Speaker specification: 40mm neodymium magnet
Impedance: 32 ± 15%
Frequency response: 20Hz~20kHz
Sensitivity: 110db ± 3dB
Microphone: 6050
Sensitivity: -46db ± 2db
Impedance: 2.2kΩ
Directivity: Omni-directional
Wire length: 1.9M, 3.5PVC