Poly Plantronics H81N-CD Over-the-Ear, Ear Bud Receiver with Noise Canceling Microphone.

H31C/D StarSet Headset

Poly Plantronics Part# 43674-01

Headset/Earsets – TAA Compliant – StarSet - H31CD - Earset - Wired - 15 ft Cable Length - Mono - 600 Ohm Impedance - Proprietary - Over-the-ear - Monaural - Boom - Electret - Open - StarSet - Push-to-talk

H251-CD, General Trades

Poly Plantronics Part# 206966-01

Headphones/Earphones – TAA Compliant – H251-CD - Headset - Wired - Mono - Quick Disconnect - Over-the-head - Binaural - Boom - Black - Supra-aural

H251N-CD GENERAL TRADES Over-The-Head Ear Muff Receiver

Poly Plantronics Part# 207063-01

Headphones/Earphones – TAA Compliant – H251N-CD - Headset - Wired - Mono - Quick Disconnect - Over-the-head - Monaural - Boom - Noise Cancelling - Supra-aural - Mexico