USB-C or USB-A and Bluetooth connectivity; connect to desktop or laptop with USB cable; connect to smartphone with Bluetooth when connected via USB ^^ Attaches to monitors up to 2 inches thick; accessible controls for switching between USB and Bluetooth sources; includes multi function button for play and pause; volume and mic mute with LED indicator ^^ 20W Power Output; Rear-facing bass radiator; accurate mids; clear highs ^^ Simultaneous connection to PC or Mac via USB; connect to smartphones via Bluetooth; for hands free calls or virtual meetings; Smart Voice Enhancement Technology minimizes background noise ^^ Easy setup plug and play design and includes USB C to USB A adapter and user guide; Our US based customer service team is here to help; Contact us through