Free Ship, (4) Cyber Acoustics AC-100 Mono Speech Headset Boom Mic 3.5MM Plug

Mono Headset. Frequency: Headset: 20-20KHz / Microphone: 100-16KHz. The AC-100B is one of CA’s main-stay mono headsets. Comfortable and efficient. The AC-100B utilizes dual 3.5mm plugs, compatible with most PC computers.

eBay