The Evolve 30 II headset is a professional, Unified Communications certified, mini corded USB-C/A headset with call control unit for truly seamless communication Connect to your PC via USB-C/A or use the 3.5mm jack to connect to your mobile device such as a smartphone or tablet (Device dependant) to work or listen to music. In line call controller unit with large buttons and LED indicators, provides easy call management for the user making handling calls or even listening to music so simple Flexible plug and play connectivity to your computer or mobile device via USB-C/A (device dependant) makes installation so simple, meaning it works straight out of the box. Noise-cancelling microphone eliminates background noise, making it perfect for any professional who needs excellent sound quality yet still wants to stay in touch with their surroundings