Plantronics H31CD Starset All-day Comfort. The super-lightweight StarSet, with soft, pliable ear tips and ergonomic behind-the-ear styling, stays comfortable all day Superior Sound. StarSet microphone and speaker provide clear and natural voice tones Voice Tube - Plantronics trademark design: light weight and unobtrusive, delivers great sound quality in all but the noisiest environments Greater flexibility. Various Plantronics adapters allow StarSet headsets to work with any phone system Quick Disconnect feature allows you to walk away from the phone while still wearing your headset, Warranty: Two Years