The all-new Koss CS295-USB Communication Headset Headphones feature On-Ear, single sided design, Connects via USB, Lightweight design for all-day comfort, Soft, pillow-like on-ear cushion, Form fitting Koss D-Profile, Noise canceling electret microphone and Flexible microphone arm. If you prefer a double-sided communication headset headphone, check out the all-new CS300.