Very flexible and durable. Standard noise cancelling functionality, which makes it ideal for a busy office environment. Unique ability to customize Speaker and Mic volumes. Ability to conference call up to 4 headsets for training or conference calls. Up to 50 meters wireless range. If you would like to answer the calls remotely, away from your desk, we recommend to add a lifter that allows you to answer the call from a distance by simply pushing a button on the earpiece.