1. Uplink interface: Type-C male
2. Audio interface: 3.5mm female
3. Charging interface: Type-C female
4. Interface pin definition: 3.5mm female
5. Matching analog earphone impedance: typical 320
6. Support headset types: CTIA and OMTP standard headsets
7. Headphone insertion/removal detection: support
8. Digital audio codec chip: CX21988
9. Digital audio codec decoding rate: support DAC: 96KHz/24bit; ADC 48K/16bit
10. Signal to noise ratio: 100dB
11. THD+N 1KHz 0dBFS: -85dB
12. Charging protocol chip: LDR6023
13. Charging protocol: Type-C PD fast charging protocol
14. Charging voltage (max): 20V
15. Charging current (max): 3A