The transmitter, the radio and live reception.
The complete original demonstration shows the round device, switching on, FM tuning and a reception example. The frequency label in this footage belongs to the demonstration unit.
The transmitter circuit fits on a human fingernail. The complete assembly is shown in the next photo.
Miniature radio electronics / FM
Spy-IL12 Mini FM Spy Bug
Fingernail-sized circuit.
Complete FM assembly.
The transmitter circuit fits on a human fingernail. It is supplied as a complete assembly with an on/off switch and battery holder, sending live audio to a separate FM radio.
$25.00 USD
FM 100–108 MHz2 × CR2032 includedMade in Israel
An FM receiver is required and sold separately. Tune a suitable radio to the operating frequency written on your transmitter’s packaging.
Private preview. Payment is not connected.
US shipping · $9.00 per item
View this model on eBay ↗Dispatch from Hollywood, Florida in 2–3 business days after payment confirmation. Estimated US transit after dispatch: 3–5 business days.
From microphone to receiver
How it works.
Sound → microphone → FM transmission → radio
01
Power the device.
Fit both CR2032 batteries as demonstrated, then use the on/off switch.
02
Match the frequency.
Select FM on a compatible receiver and tune to the value on your package.
03
Listen live.
Adjust receiver volume and antenna position for the clearest reception.
Published maximum radio range: up to 300 m (about 984 ft), depending on conditions. Walls, interference, antenna positioning and the receiver affect actual range. The illustration explains the signal path; it is not a guarantee of a 300 m connection through buildings.
Small circuit. Complete assembly.
It fits on a human fingernail.
The first photo shows the transmitter circuit itself. The second shows it fitted with the power switch and battery holder — the complete assembly supplied with your order.
The transmitter circuit
Fits on a human fingernail.
The complete assembly
With power switch and battery holder. This is what you receive.
A direct radio connection
Pick up sound.
Tune in over FM.
Spy-IL12 combines a 5 mm electret microphone and an FM transmitter. It picks up nearby sound and sends the audio to a separate receiver tuned to the same frequency.
Each unit is tested and pre-tuned before dispatch. Use the frequency label on your own package, rather than a frequency shown in an example photograph or video.
Two CR2032 lithium batteries fit into the built-in holder. A slide switch controls power. The published continuous operating time is 24–48 hours; actual time depends on batteries and conditions.
Nail-sizedTransmitter circuit
100–108 MHzSpecified FM band
2 × CR2032Batteries included
On / offBuilt-in power switch
Watch before you choose
See the real setup.
Original Full HD footage · 2 min 38 sec
At a glance
The details,
clearly laid out.
A compact FM microphone transmitter with a separate receiver for listening.
A suitable FM radio covering your transmitter’s operating frequency can also be used.
- Model
- Spy-IL12 · complete FM transmitter assembly
- Function
- Live audio transmission over FM
- Specified operating band
- 100–108 MHz
- Individual frequency
- Identified on your transmitter’s packaging
- Transmitter circuit size
- Fits on a human fingernail
- Microphone
- 5 mm electret microphone
- Published maximum range
- Up to 300 m / 984 ft; depends on conditions
- Power
- Two CR2032 lithium batteries, included
- Specified working time
- 24–48 hours continuous operation
- Antenna
- Approx. 70 cm / 27.6 in
- Antenna wire diameter
- Approx. 0.58 mm
- Controls
- On/off switch and tuning capacitor
- Receiver
- Separate compatible FM radio required
- Manufactured in
- Israel
Your package
What arrives.
- One complete Spy-IL12 FM transmitter assembly
- Attached antenna and built-in battery holder
- Two CR2032 lithium batteries
- A protective storage case
- Tuning instructions
Receiver sold separately. Package photographs show an example frequency. Read the label supplied with your own transmitter.
Good to know
A few clear answers.
Why does the complete unit look larger?
The photo on the finger shows the transmitter circuit itself. The larger round unit is the same transmitter fitted with its power switch and battery holder. Your order includes the complete assembly, not just the small circuit.
Which FM receiver do I need?
A receiver that tunes to your transmitter’s labelled operating frequency within the specified 100–108 MHz band. The recommended radio is linked above and is sold separately.
Does it make recordings?
The described function is live FM audio transmission to a separate radio. This is not a standalone audio recorder.
Are the batteries rechargeable?
No. It uses two replaceable CR2032 lithium batteries. Two are included; do not attempt to recharge them.
How long does it operate?
The specified continuous operating time is 24–48 hours. Switch off after use, then remove the batteries and store them separately.
Is every unit set to 106.6 MHz?
No. 106.6 MHz appears in the example photographs; the video shows another unit. Tune to the frequency identified on your own packaging.
Should I adjust the tuning capacitor?
The unit is supplied tested and pre-tuned. Although a trimmer capacitor is present, the selected listing recommends leaving its setting unchanged. Contact Spy-IL if you need help.
Is the stated 300 m range guaranteed?
No. This is the published maximum, depending on conditions. Interference, obstacles, antennas and receiver choice affect actual results.
Check your radio setup.
Ask Alex about the transmitter or FM receiver compatibility.