Wireless DECT headset system. Connection to the device: Bluetooth, DECT. Wearing style: On-Ear, wearing style: Overhead band, wearing mode: Duo. Suitable for office, call center, home office. Microsoft certification: for Microsoft Teams. Noise-cancelling microphone with Poly Acoustic Fence technology. Conference with up to 4 headsets on one base station. With up to 13 hours of talk time per charge, you can move around, multitask, and get more done. Ideal for modern office work thanks to the intuitive user interface on the universal base station, which can connect to almost any Savi headset. Guaranteed flexibility with the ability to connect from your computer, landline, or mobile phone. Excellent call quality. With the Poly Savi 8400 Office Series headset system, you can focus entirely on your tasks and enjoy crystal-clear conversations thanks to the noise-cancelling microphone with narrow speech pickup. Connected to multiple devices. The Poly Savi 8400 Office Series is designed for modern offices with 3-way connectivity and is the perfect solution for business calls. Stay connected in the office. You can even use four headsets with the base station to enhance productivity. Free yourself from your desk. Enjoy the convenience of hands-free calling and generous range with the Poly Savi 8400 Office Series. With a talk time of up to 13 hours and a freedom of movement of up to 180 meters, you can continue calls away from your desk.