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BF-TECH CA K1 2-Pin Covert Acoustic Tube Surveillance Earpiece Headset with Inline PTT Mic
BF-TECH CA K1 2-Pin Covert Acoustic Tube Surveillance Earpiece Headset with Inline PTT Mic
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Quick Specs
Quick Specs
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Achieve clear, private, and low-profile communications with the BF-TECH CA K1 2-Pin Covert Acoustic Tube Surveillance Earpiece Headset. Designed for security personnel, event organizers, outdoor operators, and emergency communications volunteers, this surveillance-style headset routes incoming audio directly into the ear canal via a transparent surgical-grade coiled acoustic tube—preventing nearby individuals from hearing incoming transmissions.
Engineered with an ergonomic inline Push-to-Talk (PTT) capsule and an omnidirectional electret condenser microphone, the headset allows you to speak quietly and transmit crisp, intelligible audio without drawing attention. Fitted with the industry-standard K1 2-pin connector, it plugs directly into compatible handheld radios, allowing your transceiver to stay safely secured on a belt clip, plate carrier, or backpack harness.
📻 Amateur Radio Licensing Notice
This audio accessory is designed for use with compatible two-way transceivers. An Amateur Radio Operator Certificate issued by Innovation, Science and Economic Development Canada (ISED) (or an FCC Amateur License for US operators) is required to operate transmitting equipment on amateur frequencies. Licensed operators are responsible for ensuring station operation complies with the guidelines set out in ISED RBR-4.
🔌 K1 2-Pin Interface Compatibility
This headset utilizes the standard K1 2-Pin connector (3.5mm stereo speaker and 2.5mm mic pin spaced 11.5mm apart). It is directly compatible with BF-TECH CA (BF-F8RT, UV-5R, UV-82RT, BF-F5XT, BF-F5XP, BF-F8, BF-F8X3), Baofeng UV-5R series, BF-888S, Kenwood K1, and Retevis handheld transceivers equipped with standard 2-pin accessory ports.
📦 Direct Warehouse Dispatch
All BF-TECH CA products ship direct from the BF-TECH CA distribution facility in Ontario. Orders are processed rapidly for reliable domestic carrier delivery anywhere across Canada with zero border delays or import brokerage fees.
Key Product Features
-
🕵️
Discreet Transparent Acoustic Tube: The clear surgical-grade coiled tube blends naturally with clothing and skin tone, providing low-visibility profile and private audio monitoring in public environments.
-
👂
Soft Hypoallergenic Mushroom Earbud: Flexible silicone earbud tip fits snugly inside the ear canal, delivering high-intelligibility audio while remaining comfortable during long operational shifts.
-
🎙️
Inline PTT with Sensitive Electret Mic: Compact inline Push-to-Talk module features a tactile actuation switch and an omnidirectional electret microphone designed to capture quiet or whispered speech clearly.
-
🔄
360-Degree Swivel Lapel Clips: Equipped with independent swiveling metal clips at the microphone and acoustic tube base to anchor cabling neatly along shirt collars, vests, or lapels.
-
🛡️
Reinforced Polyurethane Cabling: High-flexibility PU-jacketed wiring with molded internal strain relief prevents cable binding, snag damage, and wire fatigue under frequent active movement.
What's Included
| Component | Description |
|---|---|
| Surveillance Headset | 1x BF-TECH CA K1 2-Pin Earpiece Harness with Inline PTT Microphone |
| Acoustic Tube Assembly | 1x Detachable Clear Coiled Acoustic Air Tube with Quick-Disconnect Coupler |
| Silicone Earbud Tip | 1x Hypoallergenic Soft Silicone Mushroom Ear Tip |
Radio Hardware Compatibility
| Brand / Lineup | Compatible Transceiver Models |
|---|---|
| BF-TECH CA | BF-F8RT, UV-5R, UV-82RT, BF-F5XT, BF-F5XP, BF-F8, BF-F8X3 |
| Baofeng / Pofung | UV-5R (all sub-variants: 5RA, 5RE, Plus, V2+), BF-F8HP, BF-888S, UV-82 series, GT-3 |
| Kenwood | TK-208, TK-220, TK-240, TK-250, TK-260, TK-270, TK-320, TK-340, TH-D7, TH-F6, TH-K2 |
| Retevis / TYT / Puxing | Retevis RT27, H-777, RT-5R, RT22; TYT MD-380; Puxing PX-777, PX-888, and standard K1 port radios |
Technical Specifications
| Specification | Detail |
|---|---|
| Hardware Architecture & Interfaces | |
| Brand & Lineup | BF-TECH CA |
| Product Type | Covert Acoustic Tube Surveillance Earpiece Headset |
| Radio Interface Connector | Standard K1 2-Pin (3.5mm Ear / 2.5mm Mic, 11.5mm center-to-center spacing) |
| Acoustic Element | Clear Surgical-Grade Coiled PVC Air Acoustic Tube with Quick-Turn Detach |
| Earbud Style | Hypoallergenic Soft Silicone Mushroom Tip |
| Mounting Hardware | Dual 360-Degree Swiveling Spring-Steel Lapel / Collar Clips |
| Cable Construction | High-Flexibility PU Jacketed Cabling with Molded Strain Relief |
| Acoustic & Audio Performance | |
| Microphone Element | Omnidirectional Electret Condenser Microphone |
| Microphone Sensitivity | -38 dB ± 2 dB |
| Transducer Speaker | Miniature Micro-Dynamic Audio Transducer Capsule |
| Transducer Impedance | 32 Ohms ± 15% @ 1 kHz |
| Rated Audio Power | 100 mW (Peak 200 mW) |
| Regulatory Standards & Fulfillment | |
| Operator Regulatory Responsibility | Licensed operators are responsible for operation under ISED RBR-4 guidelines |
| Fulfillment Location | Ships Direct from BF-TECH CA in Ontario, Canada |
Description
Achieve clear, private, and low-profile communications with the BF-TECH CA K1 2-Pin Covert Acoustic Tube Surveillance Earpiece Headset. Designed for security personnel, event organizers, outdoor operators, and emergency communications volunteers, this surveillance-style headset routes incoming audio directly into the ear canal via a transparent surgical-grade coiled acoustic tube—preventing nearby individuals from hearing incoming transmissions.
Engineered with an ergonomic inline Push-to-Talk (PTT) capsule and an omnidirectional electret condenser microphone, the headset allows you to speak quietly and transmit crisp, intelligible audio without drawing attention. Fitted with the industry-standard K1 2-pin connector, it plugs directly into compatible handheld radios, allowing your transceiver to stay safely secured on a belt clip, plate carrier, or backpack harness.
📻 Amateur Radio Licensing Notice
This audio accessory is designed for use with compatible two-way transceivers. An Amateur Radio Operator Certificate issued by Innovation, Science and Economic Development Canada (ISED) (or an FCC Amateur License for US operators) is required to operate transmitting equipment on amateur frequencies. Licensed operators are responsible for ensuring station operation complies with the guidelines set out in ISED RBR-4.
🔌 K1 2-Pin Interface Compatibility
This headset utilizes the standard K1 2-Pin connector (3.5mm stereo speaker and 2.5mm mic pin spaced 11.5mm apart). It is directly compatible with BF-TECH CA (BF-F8RT, UV-5R, UV-82RT, BF-F5XT, BF-F5XP, BF-F8, BF-F8X3), Baofeng UV-5R series, BF-888S, Kenwood K1, and Retevis handheld transceivers equipped with standard 2-pin accessory ports.
📦 Direct Warehouse Dispatch
All BF-TECH CA products ship direct from the BF-TECH CA distribution facility in Ontario. Orders are processed rapidly for reliable domestic carrier delivery anywhere across Canada with zero border delays or import brokerage fees.
Key Product Features
-
🕵️
Discreet Transparent Acoustic Tube: The clear surgical-grade coiled tube blends naturally with clothing and skin tone, providing low-visibility profile and private audio monitoring in public environments.
-
👂
Soft Hypoallergenic Mushroom Earbud: Flexible silicone earbud tip fits snugly inside the ear canal, delivering high-intelligibility audio while remaining comfortable during long operational shifts.
-
🎙️
Inline PTT with Sensitive Electret Mic: Compact inline Push-to-Talk module features a tactile actuation switch and an omnidirectional electret microphone designed to capture quiet or whispered speech clearly.
-
🔄
360-Degree Swivel Lapel Clips: Equipped with independent swiveling metal clips at the microphone and acoustic tube base to anchor cabling neatly along shirt collars, vests, or lapels.
-
🛡️
Reinforced Polyurethane Cabling: High-flexibility PU-jacketed wiring with molded internal strain relief prevents cable binding, snag damage, and wire fatigue under frequent active movement.
What's Included
| Component | Description |
|---|---|
| Surveillance Headset | 1x BF-TECH CA K1 2-Pin Earpiece Harness with Inline PTT Microphone |
| Acoustic Tube Assembly | 1x Detachable Clear Coiled Acoustic Air Tube with Quick-Disconnect Coupler |
| Silicone Earbud Tip | 1x Hypoallergenic Soft Silicone Mushroom Ear Tip |
Radio Hardware Compatibility
| Brand / Lineup | Compatible Transceiver Models |
|---|---|
| BF-TECH CA | BF-F8RT, UV-5R, UV-82RT, BF-F5XT, BF-F5XP, BF-F8, BF-F8X3 |
| Baofeng / Pofung | UV-5R (all sub-variants: 5RA, 5RE, Plus, V2+), BF-F8HP, BF-888S, UV-82 series, GT-3 |
| Kenwood | TK-208, TK-220, TK-240, TK-250, TK-260, TK-270, TK-320, TK-340, TH-D7, TH-F6, TH-K2 |
| Retevis / TYT / Puxing | Retevis RT27, H-777, RT-5R, RT22; TYT MD-380; Puxing PX-777, PX-888, and standard K1 port radios |
Technical Specifications
| Specification | Detail |
|---|---|
| Hardware Architecture & Interfaces | |
| Brand & Lineup | BF-TECH CA |
| Product Type | Covert Acoustic Tube Surveillance Earpiece Headset |
| Radio Interface Connector | Standard K1 2-Pin (3.5mm Ear / 2.5mm Mic, 11.5mm center-to-center spacing) |
| Acoustic Element | Clear Surgical-Grade Coiled PVC Air Acoustic Tube with Quick-Turn Detach |
| Earbud Style | Hypoallergenic Soft Silicone Mushroom Tip |
| Mounting Hardware | Dual 360-Degree Swiveling Spring-Steel Lapel / Collar Clips |
| Cable Construction | High-Flexibility PU Jacketed Cabling with Molded Strain Relief |
| Acoustic & Audio Performance | |
| Microphone Element | Omnidirectional Electret Condenser Microphone |
| Microphone Sensitivity | -38 dB ± 2 dB |
| Transducer Speaker | Miniature Micro-Dynamic Audio Transducer Capsule |
| Transducer Impedance | 32 Ohms ± 15% @ 1 kHz |
| Rated Audio Power | 100 mW (Peak 200 mW) |
| Regulatory Standards & Fulfillment | |
| Operator Regulatory Responsibility | Licensed operators are responsible for operation under ISED RBR-4 guidelines |
| Fulfillment Location | Ships Direct from BF-TECH CA in Ontario, Canada |
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