Flexible connectivity using USB or jack. Manage calls easily with call control unit to make, take and mute calls. Plug-and-play connectivity for quick and easy set-up. Leather-feel ear cushions and around-the-ear design for all-day use. Works with all leading UC platforms and certified for Skype for Business, Cisco and more. Professional headset with flexible connectivity and great sound for calls and musicEngineered for flexible connectivity, the Evolve 30 is a corded headset for professionals who want a simple and fast plug-and-play connection to a USB or jack. Features a control unit for easy call management and is certified for Skype for Business, Cisco and more. Comes with leather-feel ear cushions and on-the-ear design for all-day use. Performance Certification CE, FCC, KCC, RCM, UL Country of origin China Plug and Play Yes Music playback Yes HD voice Yes Hearing protection technologies Jabra IntelliTone, Jabra PeakStop, Jabra Safetone G616, Jabra SafeTone Number of simultaneousl