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Description
Listen Technologies LK-1 ListenTALK Transceiver with Lanyard, Ear Speaker, and BatteryTransceiver for 2 Way Communications For Communication Among 2 or More People Convenient Push to Talk Operation User Controls for Volume, Pairing & More Compatible with Smartphone Earbuds Includes Universal Ear Speaker Includes Lanyard Includes Rechargeable Li ion Battery The Listen Technologies LK 1 is a transceiver designed for two way mobile communications. It utilizes Listen Technologies proprietary encryption technology to ensure security, and
- Transceiver for 2-Way Communications
- For Communication Among 2 or More People
- Convenient Push-to-Talk Operation
- User Controls for Volume, Pairing & More
- Compatible with Smartphone Earbuds
- Includes Universal Ear Speaker
- Includes Lanyard
- Includes Rechargeable Li-ion Battery
The Listen Technologies LK-1 is a transceiver designed for two-way mobile communications. It utilizes Listen Technologies� proprietary encryption technology to ensure security, and provides easy-to-use, push-to-talk implementation in the field for simple coordination and communication among two or more collaborators in any scenario.
User controls such as volume up, volume down, talk, power/status, and pairing help you in tailoring the unit to your particular, moment-to-moment needs. Though the unit can be used with a Listen Technologies headset�or standard smartphone earbuds�the LK-1 comes with an LA-401 Universal Ear Speaker, as well as a lanyard (useful for on-the-go scenarios), and an LA-365 rechargeable lithium-ion battery.
In the Box
Listen Technologies LK-1 ListenTALK Transceiver with Lanyard, Ear Speaker, and Battery
Listen Technologies LK-1 specs
| Radio | |
|---|---|
| Operating Frequency | 1920 to 1930 MHz |
| Power | 4 mW, average |
| Typical Range | Indoor: 328" / 100 m, depending upon condition Outdoor: 656" / 200 m, depending upon conditions |
| Modulation | GFSK - FHSS, TDD/TDMA/DCA |
| Security | Subscription: 40-bit (pin free) Authentication: 32-bit Encryption: 64-bit |
| Headphone Output | |
|---|---|
| Impedance | 16 to 32 Ohms |
| Max Output Power | 67 mW, 16 Ohm load (threshold of clipping) |
| Features | Side-tone adjustable |
| Microphone | |
|---|---|
| Compatibility | Electret, external bias |
| Power | 3 V, 2 mA current maximum |
| Sensitivity | -28 to -50 dBV/Pa |
| Internal Microphone | Switching: Auto detect on jack insertion or manual Maximum Input Level: 109 dB SPL Gain: Adjustable with 30 dB range |
| System | |
|---|---|
| Frequency Response | 40 Hz to 15 kHz, ±3 dB, 22 kHz low-pass filter |
| Signal to Noise Ratio | 70 dB, A-weighted (threshold of clipping) |
| Total Harmonic Distortion | 0.5% at 1 kHz, 22 kHz low-pass enabled |
| Programming | Via software and USB port on unit or via software and USB port on docking station |
| Physical | |
|---|---|
| Enclosure Material | PC ABS plastic |
| Indicators | 64 x 128 OLED display, variable brightness Red/white multi-function LED (mute, charge status) |
| User Controls | Volume up, volume down, talk, power/status, talk modes, pairing |
| Connections | 1 x 3.5 mm TRRS headset output, CTIA compliant 1 x micro-USB port for control and charging 1 x 4-contact charger port |
| Battery Type | Lithium-ion rechargeable, removable, 1200 mAh 3 x AAA battery compartment (optional) |
| Operating Time | Li-ion: 12 hours for participant, 8 hours for leader (typical) AAA: 9 hours for participant, 6 hours for leader (typical) |
| Charging Time | 2.5 to 3 hours (typical) |
| Power Save Mode | Power down on loss of signal Power down on disconnection of headset (1 min) Power down on charging |
| Compliance | Pending (FCC part 15, ICS-03, CE, RCM, RoHS, WEEE) |
| Temperature | Operational: 14 to 104°F / -10 to 40°C Storage: -4 to 122°F / -20 to 50°C |
| Relative Humidity | 0 to 95% relative humidity, non-condensing |
| Dimensions (H x W x D) | 3.9 x 2.1 x 0.9" / 10 x 5.4 x 2.4 cm (with belt clip) 3.9 x 2.1 x 0.6" / 10 x 5.4 x 1.6 cm (without belt clip) |
| Packaging Info | |
|---|---|
| Package Weight | 0.45 lb |
| Box Dimensions (LxWxH) | 6.0 x 4.4 x 2.1" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Game Changer for Coffee Lovers
Color: Storage Cover Black, Size: Rechargeable
I purchased the Circle Joy Rechargeable frother mostly because of the price. The frothy-whipped cream is a treat on the weekends, and the last hand frother I purchased zapped out. WoW - this one is amazing! The last one I had was battery operated, and wasn't as fast as this one. I now use it everyday because it works so quickly. It comes with a "lid" for the blender part, so I can toss in my briefcase. Love that recharges quickly so its ready when I am. Great price, easy to use, looks sleek, and tiny enough to take with you. LOVE, FiVE Stars
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 4
Great for short term
Color: Storage Cover Black, Size: Rechargeable
Works great when it works.... But I've bought three this year and two of them just unexpectedly died with no logical reason. Giving up and trying a new brand for my protein coffee drinks. *Edit....after original review the seller offered a refund and apologized for the issues I had. Bumping up my rating for proactive customer service and trying to make things right.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Great buy!
Color: Storage Cover Black, Size: Rechargeable
Great product. I'm glad I bought this to replace my old, cheap one that I got from Ikea. I like that it has double whisk as it does froth my liquids really well. I like the speed of it and it's easy to use and wash. The battery life is pretty long as well. I haven't charged it since I got it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
★★★★★ 5
Pretty darn good frother...
Color: Storage Cover Black, Size: Rechargeable
This is a pretty darn good frother/whisk, which we use primarily for mixing Crystal Light and LMNT drinks. It holds a charge for a long time and it is easy to recharge with the USB-C port and cable. My only complaint is that you must hold the power button continuously while operating it which is challenging to do using tall cups. It would be much better if is was a two stage on-off switch and had a longer wand, which isn't as long as it could be. But the unit is lightweight, easy to use and very versatile. Overall, I would buy it again.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Works great!
Color: Storage Cover Black, Size: Rechargeable
I bought this because the frother I had was very weak. Even with new batteries, it just never had much oomph. I liked the idea of it being rechargeable and no more batteries!
I expected to have to charge it when it came, but it had full power. I have used it every day since it arrived, and it hasn't slowed down a bit. It is easy to use, just pushing down with my thumb on the top. I also love that it has a lid/case. When I bring it on a trip it is fully protected from damage.
I highly recommend this frother. It is the best one I have had - and I have had quite a few.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
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