Kamal TWS Wireless Earphone K907

Bluetooth version V5.3 Voltage 3.3-4.2VCommunication range &lt;10m(Standard Environment)Frequency response sensitivity 20Hz-20KHzSensitivity 103dB SPL +-3 dB Distortion &lt;5% Impedance 160Support protocol HSPHFPA2DPAVRCPBluetooth version V5.3 Voltage 3.3-4.2V Communication range <10m(Standard Environment) Frequency response sensitivity 20Hz-20KHz Sensitivity 103dB SPL +-3 dB Distortion <5% Impedance 160 Support protocol HSPHFPA2DPAVRCPBluetooth version V5.3 Voltage 3.3-4.2V Communication range <10m(Standard Environment) Frequency response sensitivity 20Hz-20KHz Sensitivity 103dB SPL +-3 dB Distortion <5% Impedance 160 Support protocol HSPHFPA2DPAVRCP