Headphone jack features:Interface pin definition: 6 Pin pads are reservedMatching analog earphone impedance: 16~ 32Digital audio codec decoding rate: the highest support DAC: 384KHz/32bit; ADC 48K/16bitSignal-to-noise ratio (SNR) @1KHz 0dBFS: 120dbTHD+N @1KHz 0dBFS: -94dBCrosstalk suppression @1KHz 0dBFS: 98dBCompatible with , , , Google, and other mainstream brand mobile phones, tablets and other devices. Support voice calls, volume + - music pause and other functionsStandard USB2.0 protocol, compatible with Android, Hongmeng, Windows and other systems.Different batches, product appearance and color may be different, does not affect the useColour:yellowMaterial:MetalPackage Contents:1 x Audio ModuleOnly 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.