The UC Voice 550 mono headset is optimized for use with all leading Unified Communications systems Key Features Operating System: Mac Windows Connectivity: USB (Universal Serial Bus) Frequency Response: Wideband Microphone Type: Noise cancel Wearing Style: Headband Designed for IP-based telephony & Unified Communications systems A mono headset optimized for use with all leading Unified Communications systems & featuring a classic, comfortable design. The UC Voice 550 mono headset is optimized for use with all leading Unified Communications systems Employees will enjoy a comfortable headset, with a classic design. Customers will enjoy a clearer conversation, with the headset's wideband audio that optimizes the employee's voice & transmits it with clarity. Designed for IP-based telephony & Unified Communications systems Employees enjoy a comfortable headset with a classic design Enjoy clear conversations with DSP technology Wear it all day & be comfortable, thanks to Jabra Ultimate Comfort Eargels™ Know when it’s connected & when you need to recharge