The Jabra Evolve 40 MS Mono is a headset with professional grade noise-canceling technology specifically designed to improve conversations. The speakers are built for style and comfort with soft leatherette ear cushions which is designed to last and reduce office noise. This headset allows easy connection via USB and comes with a 3.5mm jack stick incorporated into the control unit giving you the freedom to connect your corded headset to a PC, smartphone or tablet. It is optimized for Microsoft Communication which provides instant Plug & Play installation for your headset.Evolve 40 MS Mono Features: Mono Headset Made For Voice & MusicOptimized for Microsoft Communication w/ Built-In 3.5mm Jack & USB AdapterPassive Noise Canceling Speakers w/ Leatherette CushionsNoise Canceling MicrophoneIn-Line Call Controls w/ MuteJabra Xpress CompatibleIntegrated Busy LightDiscrete Boom ArmConnects to PC, Mobile & Tablet via USB or 3.5mm JackDigital Signal ProcessingOver-The-Head Wearing StyleCertified by Cisco & Avaya