[Model]: Plantronics HW251 Headset Product Description] Plantronics HW251 replace Plantronics H251 headset, Plantronics SupraPlus Wideband headset using the latest wideband VoIP technology. High-quality sound, especially for call center professionals wear. Wideband audio to the wide audio telephone sound more natural audio voip communications equipment using the highest quality, with the wide effect; support all Plantronics amplifiers and USB headset adapter 【Features】 high-quality sound quality, especially for the call center professionals to wear wideband audio wide audio telephone sound more natural with the wide audio VoIP communications equipment of the highest quality high-quality audio to ensure high-quality communication quick disconnect feature provides more freedom to support all Plantronics amplifiers and USB Headset Adapter 2 years Warranty