3.5mm.
Speaker Size. 40mm with Neodymium Magnets.
Onboard Controls. Master Volume Wheel, Mic Mute.
Microphone. Fixed Omni-Directional Flip-to-Mute Microphone.
Headband Material. Synthetic Leather with Foam Cushioning.
Ear Cushion. Over Ear, Synthetic Leather with Foam Cushioning.