Microsoft Modern USB-C Speaker: 300Hz–10kHz for conferences, 200Hz–20kHz for music playback, driver with a 50 mm full range, Matte black, USB-C connector, two omnidirectional microphones, Microsoft Teams button, mute button, volume up/down button, hook switch button, roughly 191 grams (0.426 pounds), Operating systems: Mac OS X 10.15, Mac OS 11.0, Windows 11/10, and Windows 8/8.1 * Conference Software: Microsoft Teams certified: Go ahead. Specifications for a 1.5 m conference room: Fabric + Silicone 1. A contemporary USB-C speaker from Microsoft 2. Bringing a case 3. A quick start manual 4. The warranty and safety document 138 mm (5.43") in length 70 mm (2.756") in width 29 mm (1.142") in depth, one-year guarantee