Enersound 10-Person Translation System with Interpreter Monitor - US-Based Lifetime Limited Warranty and Support

4-channel digital FM transmitter with 500ft range (Expandable up to 1000 ft with extended antenna) FCC and IC Approved for legal use in the USA and Canada. Receivers use 2 AAA batteries lasting up to 55 hours of audio time.You may also like Enersound 10-Person Professional Portable Translation System - US-Based Lifetime Limited Warranty and Support.