The Eartec UltraLITE Full Duplex Wireless Intercom Systems are designed for seamless team communication in demanding environments. These systems offer hands-free, full duplex voice contact, enabling crews to communicate simultaneously without pressing buttons. The headsets are completely self-contained, eliminating the need for belt packs or base stations. With the Auto Mute Mic boom and operation in the non-licensed DECT band, these systems ensure clear communication without interference from other RF equipment.

• Type: Full Duplex Wireless Intercom Systems
• Headset Options: Single or Dual Speaker Headsets
• Communication Mode: Hands-free, simultaneous full duplex
• Base Station Requirement: None, completely self-contained
• Microphone: Auto Mute Mic boom, swivels 270 degrees, wearable on left or right
• Operating Range: Up to ½ mile
• Battery Type: Lithium Polymer, field replaceable
• Battery Life: Standard 6 hours, extendable with spare batteries
• Frequency Band: Non-licensed DECT band
• Expandability: Field programmable and expandable
• Included Accessories: Soft side storage case (or padded carry case for dual speaker version)

See here.