Grandstream Compatible Plantronics VoIP Wireless Headset Bundle | Grandstream Phones: GXP1610, GXP1620, GXP1625, GXP1625, GXP1628, GXP2130, GXP2140, GXP2160, GXV3240, GXV3275 Grandstream VoIP Compatible Bundle 3 items: Includes Wireless Headset, Electronic Remote Answerer Interface Cable (EHS), EHS Audio Extender Compatible Phones: Grandstream Phones: GXP1610, GXP1620, GXP1625, GXP1625, GXP1628GXP2130, GXP2140, GXP2160, GXV3240, GXV3275 Range up to 350 feet away for maximum mobility Up to 8 hours of talk time - For all day usage and never miss a call. Premium Wideband Audio clarity with a comfortable Earwrap design