Poly Savi 7310-M DECT 6.0 Mono Headset Charging Base Microsoft Teams 7S439AA#ABA Brand: PolyModel: Savi 7310-M OfficePart Number: 7S439AA#ABAMPN: 7S439AA#ABA, 7S439AA, S7310-MType: Wireless DECT 6.0 Mono HeadsetColor: Black SpecificationsWireless Technology: DECT 6.0Frequency Range: 1920–1930 MHz (US)Headset Style: Single Ear / MonoWearing Style: Over-the-headConnectivity: Wired, WirelessMicrosoft Teams Certified: Yes (M version)Microphone: Noise-canceling boom microphoneAudio: Wideband audio qualityRange: Up to 400 ft / 120 mBattery Type: Rechargeable Lithium-IonTalk Time: Up to approx.