Binaural headset, Bluetooth connectivity, passive noise cancelling microphone, 30-metre wireless range, certified for Microsoft Skype for Business, 18-hour battery, wideband bandwidth, integrated busy light on both ear cups, compatible with PC/tablet & smartphone. The Jabra EVOLVE 75 SE Stereo with Bluetooth technology is a professional headset designed to improve concentration and conversations. Noise-cancelling technology gives you peace to work in the noisy, open office, effectively creating a concentration zone around you, so you can stay focused on the job. The speakers are built for style and comfort with leatherette ear cushions and are specifically designed to reduce office noise. The concentration zone is completed with a busy light indicator that signals user availability to colleagues. HD Voice for your calls, and world-class speakers for music, delivering outstanding audio with crystal-clear clarity. Block out noise and stay focused in the open office with superior ANC and an integrated busy light that acts as a do not disturb sign for your colleagues. Dual Bluetooth connectivity to two devices at the same time for calls and music, with the flexibility to move up to 100ft/30m away from your connected device. Compatible with all major communication platforms including: Skype for business, Chromebox, cisco WebEx, Google, Adobe Connect & Quickmeeting Included in the box: Evolve 75 SE Headset, Quick Start Guide, Jabra Link 370 USB adapter, Protective travel case & USB cord (allowing for use while charging) .