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ListenTALK Transceiver

Item Code: LK-1


Designed to be the new standard for two-way mobile communications, the ListenTALK Transceiver is the smartest system available. The all-in-one device, equipped with Listen Technologies’ exclusive encryption technology and push-to-talk functionality, provides the simplest option for communication and collaboration among two or more people in any environment. In addition to the included Listen Ear Speaker, ListenTALK can be used with standard smartphone earbuds or a Listen Technologies headset.

  • Fast and simple two-way communication
  • Push-to-talk functionality
  • Exclusive encryption technology for added security
  • Compatible with standard earbuds and Listen Technologies headsets
  • Long-lasting lithium ion rechargeable batteries
  • Optional Alkaline Battery Compartment
Dimensions (H x W x D) with Belt Clip10 x 5.4 x 2.4 cm (3.93 x 2.13 W x 0.93 in.)
Unit Dimensions (H x W x D)10 x 5.4 x 1.6 cm (3.93 x 2.13 W x 0.63 in.)
Unit Weight79 g (2.79 oz.)
Shipping Weight206 g (7.20 oz) with 454 g (1.0 lbs.) minimum
Enclosure materialPC ABS Plastic
ColorBlack, Chrome Buttons
IndicatorsDisplay- 64 x 128 OLED, Variable brightness
 LED- RED/White multifunction (Mute, Charge Status)
User ControlsVolume up, Volume Down, Talk, Power/Status, Talk Modes, Pairing
ProgrammingVia software and USB port on unit or via software and USB port on Docking Station
ConnectionsHeadset- 3.5mm TRRS, CTIA complaint
 USB- Micro USB, Control and Charging
 Charger- 4 Contact, Control and Charging
Headphone OutputSpeaker Load- 16 – 32 ohm load
 Max Output Power- 67 mW, 16 ohm load, Threshold of Clipping
 Side Tone- Adjustable
Microphone InputCompatibility- Electret, external bias
 Bias- 3 volt, 2 mA Current Maximum
 Sensitivity Requirement -28 to – 50 dBV/Pa
Internal MicrophoneSwitching- Auto detect on jack insertion or Manual
 Maximum Input Level- 109 DBSPL
 Gain- Adjustable, 30 dB range
SystemFrequency Response- 40 Hz to 15 kHz +/- 3dB, 22kHz low pass filter
 SNR- 70 dB, A- weighted, Threshold of Clipping
 THD- 0.5% @ 1kHz, 22kHz low pass enabled
Operating Frequency1920 to 1930 MHz – North America
 1880 to 1900 MHz – Europe, Australia
 1895 to 1905 MHz – Japan
Average Power4 mW – North America
 10 mW – Europe, Australia
 5 mW – Japan
Typical RangeIndoor 100 m, Outdoor 200 m, depending upon conditions – North America, Japan
 Indoor 150 m, Outdoor 300 m, depending upon conditions – Europe, Australia
ModulationGFSK – FHSS
SecuritySubscription- 40 bit (Pin Free)
 Authentication- 32 bit
 Encryption- 64 bit
NFC Frequency (Near Field Communications)13.56 MHz
Battery TypeLithium – ion, rechargeable non-proprietary removable, 1200 mAh
 Optional- 3 AAA Battery Compartment
Typical Operating TimeLi-ion- Participant- 12 Hours
 AAA – Participant Mode – 7 Hours
 Li-ion – Leader Mode – 7 hours
 AAA – Leader Mode – 4 hours
Typical Charge time4 Hours
Power Save ModesPower down on loss of signal
 Power down on disconnection of headset (1 min)
 Power down on charging
TemperatureOperation- -10 °C (14 °F) to 40 °C (+104 °F)
 Storage- -20 °C (-4 °F) to 50 °C (+122 °F)
Relative Humidity0 to 95% relative humidity, non-condensing
StandardsFCC part 15, ICS-03, CE, RCM, MIC, RoHS, WEEE
  • One (1) LK-1 ListenTALK Transceiver w/Leader Clip
  • One (1) LA-365 Rechargeable Li-ion Battery
  • One (1) LA-401 Universal Ear Speaker
  • One (1) LA-445-BK Breakaway Lanyard