Characteristic:  Built in DAC  Support Hi-Res sound quality  Support remote control & microphone for music and phone calls  Compatibility more USB Type-C Devices.  Remote Control:   Answer / hang up phone calls  Play / pause music  Adjust high / low music volume  Select previous / next music track  Activate Voice Command  Specifications: Uplink interface: USB Type-C  Speaker impedance: 32±15% Ω  Frequency range: 20-20KHZ  Digital audio codec: DAC, up to 96K/24bit; DC384K/24bit  SNR@1KHZ: 102dB Type  THD+N@1KHz 700m: -84dB Typ, -70dB Max  Cascade suppression: - 80dB Typ