Pliant Technologies PHS-SB11L2E-4F - SmartBoom LITE Single-Ear Electret Headset (XLR4F)The 4 Pin Female XLR model of the SmartBoom LITE Single Ear Electret Headset utilizes SmartBoom microphone flip up boom on off technology which provides high ambient noise reduction and produces high quality audio ensuring clearer communications in many professional environments. The headset also features a flexible ambidextrous design, soft foam padding, and replaceable ear cushion. Designed into a smaller form factor, these lightweight headsets are