🔧 Key Features – Eartec EVXSM
Full-Duplex Communication
Allows real-time, hands-free talking and listening—no push-to-talk required.

Master Headset Functionality
Acts as the system’s central unit, eliminating the need for a separate base station.

Self-Contained Wireless Design
Built-in transceiver; no belt packs or external components.

Expandable System
Supports up to 9 total users (1 master + 8 remote headsets) in a single network.

Extended Wireless Range
Communicates clearly up to 1148 feet (350 meters) line of sight.

Over-Ear, Circumaural Fit
Comfortable design for long shifts; worn on either ear.

270° Swivel Boom Mic
Auto-mutes when lifted, adjustable for optimal positioning.

Volume Control on Earcup
Five-level volume adjustment built into the headset for convenience.

Rechargeable, Field-Replaceable Battery
Lithium-ion battery provides up to 8 hours of runtime.

No Licensing Required
Operates in the 2.4 GHz band—no FCC license needed.

📡 Wireless Technology
Frequency Band: 2.4 GHz (2407–2475 MHz)

Modulation Type: GFSK

Duplex Mode: Time-Division Duplex (TDD)

RF Channel Access Method: Time-Division Multiple Access (TDMA)

Speech Encoding: ADPCM / 16 kb/s

Transmission Speed: 1 Mb/s

Bandwidth: 150 kHz

Channel Spacing: 1 MHz

Encryption: None

📶 System Capacity & Range
Maximum Users: Up to 9 headsets per system (1 master + 8 remotes)

Operating Range: Up to 1148 feet / 350 meters (line of sight)

Base Station Requirement: Not required; operates via master headset

🎧 Headset Design
Earpiece Design: Over-Ear (Circumaural)

Wearing Style: Headband

Number of Earpieces: Single (left or right side)

Sound Field: Mono

Microphone Boom: 270° swivel; auto-mutes when raised

Controls: Five-level volume control on earcup

🔋 Power & Battery
Battery Type: Built-in rechargeable Lithium-Ion Polymer (LiPo)

Capacity: 3.7 V / 1000 mAh

Runtime: Up to 8 hours per charge

Field Replaceable: Yes

🌡️ Environmental Specifications
Operating Temperature: 32°F to 122°F (0°C to 50°C)

Operating Humidity: 30% to 90%