External volume control, adjust the volume according to your habit.
Unique mute switch design, independent earpiece/microphone, mute button, pause whenever you want.
With an OTG cable, you can connect by plugging in a microphone.
Supports the use of two headphones at the same time.
Perfect sound effect, smart noise reduction chip for high performance.
LED indicator light shows real-time working status.
Universal compatibility and free driver for Windows/Mac OS/Linux.

Features
Input: USB 2.0 A male
Output 1: 3.5 mm green headphone port
Output 2: 3.5 mm red microphone port
Output 3: 3.5 mm CTIA 4-pole combo microphone/headphone jack
Sampling rate: 48KHz, 16 bit *SNR: ≥85dB
Frequency response: 20Hz-20KHz
Headphone and microphone mute and volume control function
Supports hot-swapping, no driver required
*Supports Windows/Mac OS/Linux
*Dimensions: L74*W34*H15.5 mm

*NOTES:
1. It is recommended that you wear headphones or turn on audio equipment when the product is properly connected.
2. To prevent possible hearing damage, do not listen at high volume for long periods of time.
3. The 4-pole combined microphone/headphone jack (TRRS CTIA) does not support national standard headphones (TRRS OMPT).