Jabra Evolve2 40, USB-A, MS Mono (24089-899-999) Headset Features - Answer/End Controls, Music Control, Mute Function Noise-cancellation (NC) - Yes Active noise-cancellation (ANC) - No Microphone Design - Flexible Boom Speaker Driver Size - 40.00 mm Earpiece Design - On-Ear Listening Mode - Mono Host Connection - 1 x USB Wearing Style - Over-the-Head Weight - 113 g