Sennheiser SC 665 (507256) - Double-Sided Business Headset | For Mobile Phone and Tablet Connection | with HD Sound & Ultra Noise-Cancelling Microphone (Black)

Sennheiser SDW 5066 (507024) - Double-Sided (Binaural) Wireless Dect Headset for Desk Phone Softphone/PC & Mobile Phone Connection Dual Microphone Ultra Noise Cancelling, Black

Sennheiser Enterprise Solution SP 20 ML 506050 Sound-Enhanced, User Friendly Mobile Speaker Phone For Desk Mobile Phone Softphone PC Connection Skype for Business Certified, Silver, EXPAND SP 20

Sennheiser SP 30 (508345) Sound-Enhanced, Wired or Wireless Speakerphone | Desk, Mobile Phone & Softphone or PC Connection | Unified Communications Optimized

Sennheiser USB-ED 01 Headset Connection Cable USB - EasyDisconnect

Sennheiser SC 45 (507082) - Single-Sided Business Headset | For Mobile Phone and Tablet | with HD Sound & Noise-Cancelling Microphone (Black)

Sennheiser CAVA 31 Headset Cable for Avaya 1600 & 9600 Series Phones

Sennehsier CSTD 08 Standard Headset Connection Cable, Easy Disconnect to Modular Plug RJ 9, coiled cord, Code 08. for direct connection of specific phones (Certified Refurbished)

Sennehiser HSA - PRESENCE Ear Hook and Ear Sleeves Accessory