1. Equipped with 2 in 1 port of microphone & earphone + standalone earphone port, support simultaneously using of two 2. Volume compass adjust volume freely 3. Emergency moment solve easily 4. Upgraded 10cm round wire, more durable and easy to use 5. Driver-free, plug and play, no require of any drivers, compatible with multiple systems 6. SNR: >=80dB 7. Frequency range: 15Hz-25KHz 8. Support system: Windows, Mac OS, Linux
