Unique Premium Design ÔÇô Crafted for comfort High Comfort Wearing Style ÔÇô Perfect adjustment to your ear for all-day wearing comfort Intuitive User Interface ÔÇô Mute microphone and adjust volume up or down Boosted Productivity ÔÇô Ultra noise-canceling microphone filters out unwanted background noise Sennheiser HD Voice Clarity ÔÇô Wideband sound for a more natural experience Full Workday Talk Time ÔÇô 8 hours in wideband sound mode and 12 hours in narrowband sound mode Intelligent Fast Charging ÔÇô 50% in 20 minutes gives you 4 hours talk time Long Distance Wireless Range ÔÇô Up to 55 m in typical office building. Up to 180m in line of sight Protected Hearing ÔÇô ActiveGardÔäó technology protects against acoustic shock and sudden sound surges Desk Phone & Softphone ÔÇô Switch from one communication channel to the other. One touch on the base station to select the channel you wish to call from Intuitive & Easy pairing ÔÇô For desk sharing and phone conferencing GAP compatible (Headset) Headset: Connect to base Base Station: Connect to desk phone and softphone Microsoft Communicator compatible Skype for Bussiness Certified