SHK-01 hands-free covert communication system

Product No.:
ca. 3-4 days ca. 3-4 days
918 pieces
Battery amount:
Choose the earphone:
75,00 EUR
incl. 19% tax excl. Shipping costs



Spystudy presents the new SHK-01 phone neckloop for micro earphone users. The main feature is the separated microphone module. High sensitive microphone allows earphone users to whisper with another party. With the clip its easy to clamp the micro on collar or wristband. The sponge cover of microphone is removeable.

Key features of the spy inductive loop system:

I. The separated micro allows easy clamp.

II. Wire box with durable cables and quality capacitor.

III. Including 2.5mm and 3.5mm golden 3pins plugs. The plug adaptor allows to connect with most of mobiles.

Download Manual Download user's manual of SHK01 spy ear transmitter

SHK-01 inductive transmitter kit package includes: 

1 x Inductive phone neckloop
1 x Blister with box
1 x Package with diferent jack adaptors 

1 x Covert micro earpiece SE02 (you can also choose other spy earpieces)2 x Batteries for micro earpiece (you can also order more)
1 x Small brush and holl out tool for the battery
1 x User manual in English


SE01 – Mini black earpiece

Completely invisible in ear canal. Economic price. Applicable to all of inductive transmitters.

Completly invisible when in ear canal
Wireless receiver drove by all inductive transmitters
Most economical invisible earpiece
Powered by tiny #337/#416 button battery
5-6 hours battery life support
Earpiece size: 13x7x6mm                                                    
more information...                                                                              

SE02 – Invisible Micro ear black or skin

Most populer invisible earpiece. Cleare audio output with 2 colors ends. Applicable to all of inductive transmitters.


Skin and black colors option
Completly invisible when in ear canal
Wireless receiver drove by all inductive transmitters
Clear voice output with high quality mini speaker
Most populer covert earpiece
Powered by tiny #337/#416 button battery                             
5-6 hours battery life support
Earpiece size: 13x8mm / 0,5g
more information...

SE03 – Spy Nano earpiece - black or skin

The smallest hidden earphone in the world - 9x6x6mm. Pair with all induction transmitters.


Smallest size with loud sound and clear voice
Skin and black colors, completely invisible deeply into ear canal
Semi-circle tail enhanced covert function
Sensitive wireless receiver with clearer voice
Powered by tiny #337/#416 button battery
5-6 hours battery life support
Earpiece size: 9x6x6mm / 0,5g
more information...

SE04 – Professional invisible wireless earpiece

Optimum anatomic design. Top grade coil and speaker with changable volume. Produce crystal clear voice.


Slim size, light weight, easy to conceal
Comfortable for both ears with an optimum anatomic design
Top grade coil and speaker, max audio output
With automatic gain control module
Powered by tiny #337/#416 button battery
5-6 hours battery life support
Earpiece size: 13x7.5x3mm / 0,5g
more information...


Model number SHK-01
Color Black
Build-in microphone YES
Frequency range Earpiece  200 Hz - 5400Hz
Transmit range To spy earpiece <10cm
Phone jack 3.5 mm jack with 4 pieces various jack adaptors
Manufacturer Spystudy covert communication
Product dimension Neckloop length 830 + 880 mm
Package Size  Bag 156x117x12 mm 
Warranty 1 Year

SBL01ST - 3.5 watt amplified bluetooth transmitter

Connect with mobile phone

SHK-01 comes with different kinds of jacks, including 2.5mm, 3.5mm, Nokia and Sony Ericsson jack.  

Put jack into headset socket in mobile phone, then confirm the neckloop is for "Audio Output/Input" if mobile phone remind you to choose the headset type.

Wear neckloop

Wear neckloop on your neck and put microphone in collar position with microphone clip.

If you need louder volume in spy earpiece, please wear the neckloop slantly same as below sketches showing.

Use neckloop with earpiece

Now you can load button battery into spy earpiece, then wear spy ear in left or right side of ear canals.

Make a call or play music in mobile phone, you will hear sounds in spy earpiece.


Q. Why voice is low?
A. Please wear neckloop slantly to get louder volume. 

Q. Why can not use on my mobile phone?
A. Many mobile phones are use same 2.5mm / 3.5mm 3 pins plugs, however, their jointing methods are diferent. You can require to make customize jointed neckloop.

Q. How to enlarge the power of neckloop?
A. You can choose new model 3.5 watt SHK-02 to get very powerful signal.

Warranty and return policy

Default warranty is 24 month since ship date.
We do not accept return if product has not quality problem.

If product is withhin warranty and get broken, you can return back and get free repair. Return shipping cost is on buyer's behalf. We will pay the shipping cost for send repaired product.
If product is passed warranty, you need to pay return shipping cost, repair fee and shipping cost for send repaired product.

Warranty will be invalid in below conditions:
1) Passed 24 months since ship date.
2) Open case or and change circuits without our formal authorization.
3) Other kinds of problems caused by wrong operations.

The end......

Customers who bought this product bought also the following products:

SBL01-ST bluetooth covert communication system

SBL01-ST bluetooth covert...

95,00 EUR
Wireless Profi Button video live transmission camera SHG0225

Wireless Profi Button video live...

440,00 EUR
3G UMTS Video Server with mini camera / Worldwide transmission of the video signal via UMTS to the Smartphone

3G UMTS Video Server with mini camera...

250,00 EUR
SBL06 bluetooth box transmitter - 50 cm transmit power to earpiece

SBL06 bluetooth box transmitter - 50...

155,00 EUR