Enersound 10-Person Professional Portable Translation System - US-Based Lifetime Limited Warranty and Support

17-channel digital FM transmitter with 150ft range 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 5-Person Portable Interpretation and Tour Guide System - US-Based 3-Year Warranty and Free Phone Support.