Williams Sound Digi-Wave Wireless System THE FUTURE IS HEAR The new Digi-Wave™ (digital spread spectrum--DSS) is a simultaneous, two-way wireless listening system in the 2.4 GHz band. Slim, lightweight, and simple to set up and use. With the push of a button, users can access two-way communication for easy group leader/group member participation. Features Portable DLT-100 transceivers for one- or two-way operation DLR-50 receivers for digital, one-way listening applications Can accommodate floor (or common) language, plus up to 14 simultaneous languages in one-way mode Four-group simultaneous use available in two-way operation Full, duplex operation Patented frequency-hopping technology minimizes interference from other devices Global turn-key solution: 2.4 GHz operation harmonized for use in most countries Range: Up to 100 feet outdoors; up to 200 feet indoors (Depending on environmental conditions.) Built-in microphone and speaker (DLT-100) DLT-100 includes individual charger with 14 hours of use per charge * FCC, CE and C-Tick approved Two-year warranty