The Norcon TTU units enable customers and employees to communicate without any background noise clearly. They help keep your staff safe, healthy, and secure. For any business, communication is of primary importance between the client and the employee, and these two-way communication headsets allow a crystal clear conversation at all times.Other featuresIt is self-powered and comes with a fast rechargeable battery.This device enables clear two-way, hands-free voice communication.The set includes operating and installation instructions for the user's convenience.