- Frequency Response : 20Hz-20KHz- Driver Impedance : 32±15%Ω- Driver Size :∮8mm- Input Power : 3mW- Output S.P.L : 92±3dB- Microphone Sensitivitys :42±3dB- Bluetooth Ver. : Ver5.0- Playtime : 16H Bluetooth Earphone Airbuds T20