(1) Plantronics Voyager 4310-M UC Bluetooth Mono V4310-M C BT700 USB-A Headphones for  Microsoft Teams P/N 218470-02 HP 77Y91AA Plantronics Voyager 4310-M UC Bluetooth Mono USB-A Headphones, MS Teams Certified P/N 218470-02 Poly Voyager 4310-M Bluetooth Mono USB-A Microsoft Teams Certified computer wireless headset with BT700 USB-A Bluetooth adapter.  Poly Voyager 4310-M USB-A Bluetooth headset is a mono style headset.  Flexible noise-cancelling microphone boom arm block unwanted noise. Class 1 Bluetooth allow up to 160 feet of range when used with the Bluetooth BT-700 adapter (included). With other Bluetooth devices, you only get 30ft (class 3).  compatible with Windows PC or Apple Mac or any mobile device or tablet. Plantronics Voyager 4300 series. Certified for Microsoft Teams Key Features: Certified for Microsoft Skype for Business, Zoom Meeting Also compatible with other UC applications such as Avaya, Cisco, Skype and others Up to 160 ft/50m range from supported smartphone or laptop with optional BT700 Bluetooth adapter (less with other Bluetooth devices) Dual flexible microphone boom arm with noise canceling Bluetooth v5.2 Battery: Up to 24 hours talk time (47 hours of listening time), 50 days standby time 2 microphones: 1 uni-directional; 1 MEMS-directional Call Controls: Track forward/track back/pause/play, mute, answer On-line busy indicator (two LED lights on speaker housing) Travel case/pouch included 218470-02 weight: 122g (0.27 lb.) Old Poly part # 218470-02 New HP part # 77Y91AA Taxes  Buyer is responsible for paying any governmental taxes imposed on your purchases, including, but not limited to, sales, customs, use or value-added taxes.