Clarity
DECT wireless technology is designed for voice transmission.
The Sonetics APX377 & APX379 wireless headsets connect to the ComHub or Base Station to allow a hands-free conversation with your team without having to shout. The headset protects you from dangerous noise levels while automatically adjusting audio to a comfortable listening level. Listen-Through allows you to hear what’s happening around you, so you can stay aware of alarms and warnings, or have a face-to-face conversation with someone without a headset. Engineered and tested for rugged durability in extreme environments; improve team communication no matter where you work.
The APX379 headset also incorporates Bluetooth to simultaneously take calls, listen to music, or even integrate a two-way radio via wired or Bluetooth inputs.

With Apex Team Wireless Headsets, you just talk. No delays. No waiting your turn. No buttons to push. Talk when you want to; interrupt when you need to; warn your team when you have to.
Connect your portable radio to an Apex Team Headset and close the distance to team members beyond 1,600 feet. Stay safe with advanced hearing protection.
Noise reduction and noise cancellation reduce unwanted background sounds to safe levels, letting your team hear each other clearly and safely.
Open mics mean you can keep your hands where they belong: on your work. No more button mashing or fumbling with shoulder mics.
Built to withstand extreme environments, Apex Wireless Headsets are dustproof, watertight, and ready to perform in the same tough conditions you face every day.


Listen-Through Technology lets you hear outside sound on demand. You control the volume. Monitor your equipment, keep an ear out for alarms; even talk with someone without a headset.

DECT wireless technology is designed for voice transmission.
Deploy a single small team and expand to full enterprise.
Digital encryption ensures privacy and security.
Up to 800 feet line-of-sight range covers work zones large and small.

The APX379 with Bluetooth offers a quiet place to take calls anywhere, any time. No need to remove your Headset and its hearing protection.

Connect your portable radio to any Apex Team Headset and close the distance to team members beyond 1,600 feet. Stay safe with advanced hearing protection.
Common DECT Specifications
Carrier Spacing: 1.724 MHz
Time Slots: 2 x 12 (up and down stream)
Channel Allocation: Dynamic
Encryption: DECT Standard Cipher with 35-bit initialization vector
Audio Bandwidth: 300 Hz to 3.4 kHz, Narrow Band, G.726 compression
50 Hz to 7 kHz, Wide Band, G.722 compression
Region 1 Specific Specifications
Range (line of sight): 1,600 feet maximum
Authorized for use in: Canada, USA
Frequency Bandwidth: 1919.808 MHz to 1930.176 MHz
Number of Carriers: 5
Total Time Slots: 60 in G.726(narrow band) / 30 in G.722(wide band)
Average Output Power: 4 mW
Maximum Output Power: 100 mW
Explore DECT7 Technology
Connect to the ComHub for team push-to-talk
Connect directly to your Headset for private push-to-talk
Bluetooth only available on APX379
APX379
Class: Class 3 Device
Frequency Bandwidth: 2400 MHz to 2485 MHz
Maximum Output Power: 0.0 dBi (peak)
Range: Up to Bluetooth standard 33 feet (10 meters)
Version: Bluetooth 3.0 with secure simple pairing
APX377
FCC Part 15
FCC ID APX377: V9N950325300V1
IC UPN APX377: 7895A-950325300
APX379
FCC Part 15
FCC ID APX379: V9N950325200V1
IC UPN APX379: 7895A-950325200
Listen-Through Technology enables the safe return of environmental sound without removing the Headset and its vital hearing protection. Monitor your equipment, hear alarms, and keep an ear on traffic. Even talk with people without Headsets while you remain protected from dangerous noise.
5 volume levels
Toggle between OFF and your previous Listen-Through volume setting
Automatic protection from sudden loud sounds
24dB
Instant voice feedback confirms feature settings and menu selections.
Update Headset firmware to access the newest features
Customize the user experience
Save and load Headset configurations for easy return to preferred settings
Over Head: 15.8oz / 448g | 17.8oz / 504g with Ruggedizers
Behind Head: 16.2oz / 458g | 18.1oz / 514g with Ruggedizers
Battery: 3.7V rechargeable lithium-ion
Battery Life: >24 hours @ 25°C
Protection: Over voltage, under voltage, over current and over temperature protection
AC Charge source: Supplied 12VDC, 500mA wall charger
DC Charge source: 5VDC to 16VDC, 1.5A minimum
Charge Time: <4 hours for fully discharged battery
Operating temperature: -22°F to 140°F / -30°C to 60°C
Storage temperature: -4°F to 122°F / -20°C to 50°C
Charging Temperature: 32°F to 113°F / 0°C to 45°C
IP Rating: IP66 (Dust tight, sealed against salt spray and moisture)
Conducted Transients: 7637-2
Quality Management System Control: ISO 9001:2015
Chemical Exposure: Intermittent Exposure MIL-STD 810 Method 504: Isopropyl alcohol, Formula 409®, WD-40®, Windex®, Bleach/Water (1:1), Mineral oil, Synthetic Sweat, Jet A Fuel, Kerosene, Gasoline, Deicing (Ethylene or Propylene Glycol mixtures), Potassium-Acetate based solution, Ansulite. (Not approved for exposure to Skydrol®).
Humidity: MIL-STD 810F and 810G
Temperature Shock: MIL-STD 810F and 810G
Conducted Immunity: J1113-11
Electrostatic Discharge: J1113-13
Radiated Emissions: CISPR 25
Radiated Immunity: ISO 11452-2
Salt Spray: J1455, Sec. 4.3
Vibration: J1455 Sec. 4.9
UL1642 Standard for Lithium Batteries
UN38.3 UN Transportation Testing for Lithium Batteries
A sticker on the inside of the right ear dome displays your headset’s model and serial number. To see it, remove the ear seal and inner foam cover from the right ear dome (the one without the microphone boom).
APX377DECT7® Wireless Headset |
APX379DECT7® Wireless Headset with Bluetooth |
Hands-free operation
Real-time team communication
Advanced hearing protection
Listen-through technology
DECT7 wireless communication
Bluetooth and two-way radio options
Up to 24-hour battery life
24 decibels of noise reduction protects your hearing while you get the job done.
Talk like you're on a conference call. No Delays or taking turns to speak.
Listen-through technology lets you hear warnings, your equipment, and anything important in your environment.
When you have something important to say, your team will understand. No shouting, no hand signals required.
Customize your settings to control who and what you hear for improved safety.
Hands-free operations let you talk with your team while you keep your hands on your work.