ENGENIUS DURAWALKIE 1X Durafon 2-Way Radio Walkie • Designed For Rugged Industrial Use • Handset Functions As a 2-Way Radio • 2-Way Radio Function: Full-Duplex Intercom Or Half Duplex Broadcast • Speakerphone • 4-Line Liquid Crystal Display • 2.5Mm Headset Port • Durafon 1X System Only