This is the Poly Voyager Office Base Microsoft Teams, for the Poly Voyager Legend 50 MS headset. This base allows the wireless headset to connect to a desk phone and computer, allowing dual connectivity. The base connects to your headset via Bluetooth — up to 300 ft away. The Poly Voyager Office Base is also a charger for the headset when not in use. Key Features: Poly Voyager Office Base for Microsoft Teams USB-A, USB-C Cable Telephone Interface Cable AC Power Supply Also compatible with Voyager 4300 Series and Focus 2 Series headsets 2-year Poly warranty Headset not included How to Pair the Poly Voyager Office Base to your Poly 4300 or Focus 2 Bluetooth headset: To put your headset in pair mode, slide and hold the Power switch away from the off position until you hear "pairing" and the headset LEDs flash red and blue. Put your base into pair mode by pressing and holding the Bluetooth pairing button on the back of your base for 2 seconds until the display panel's Bluetooth icon flashes blue and red. 3. Pairing is successful when you hear "pairing successful" and "base connected" and the display panel's Bluetooth icon turns solid blue.