Interface: Wired Remote control proper use: Audio Brand compatibility: Jabra Black Press buttons Backlight buttons Number of devices supported: 1 Control unit for Jabra Engage corded headsets. Enables easy call control with adjust volume, mute, speed dial, answer and end call functionality. Stay-flat design. USB-C connectivity.Control unit for Jabra Engage corded headsets. Enables easy call control with adjust volume, mute, speed dial, answer and end call functionality. Stay-flat design. USB-C connectivity. Certified for Microsoft Skype for Business in combination with Engage 50. Design Backlight buttons Yes Input type Press buttons Housing material Acrylonitrile butadiene styrene (ABS), Polyoxymethylene (POM), Thermoplastic elastomer (TPE) Product colour Black Compatible products Engage Brand compatibility Jabra Remote control proper use Audio Interface Wired Performance Country of origin China LED indicators Yes Number of devices supported 1 Ports & interfaces USB connector type USB