Connectland Multimedia Stereo Adjustable Headset with Boom Microphone 3.5 mm Connector headphone, CL-CM-5023 Light weights: you'll be comfortable with this headset thanks to the plush ear pads and adjustable headband that gives you a customized fit. Connectivity Technology: Wired Clearer internet calls. Great for on-line chat and online gaming Full Stereo sound for your music, movies and games 1x Stereo 3.5mm Plug for Audio and 1x 3.5 mm Plug for Microphone Directivity: omnidirectional; speaker Diameter: 40mm; sensitivity: 108 dB; Impedance: 32 Ohm