31993 Chip Interface: TYPE C to 3.5mm Total length: 13cm Thrust: 65mW sampling rate: 32bits/384KHz Signal-to-noise ratio/SNR: more than 128dB Dynamic range/DNR: more than 120dB Distortion/+N: 95db +N: 0.0003% DSD: 64/1283(PCM) Wire: 4 strands of transparent sterling silver + 4 strands of transparent blue mixed, a total of 8 strands of sterling silver Compatible with 95% of the market's type-c mobile phones and win 10 system, system computers support calls and line control Colour: gold + blue Material: plastic + metal Package Contents: 3 set * Headphone Amp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.