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No need mobile phone, no need neckloop! GSM box and earpiece, that all you need!

Mechanical Diagram Working Principle
The new GSM box is build in dual band GSM module which can works in GSM900MHz and GSM1800MHz mobile phone networks.

After insert GSM sim card and turn on power, it automatically pick-up telephone or mobile phone calls, and transfer audio signals to spy earpiece. The powerfull inductive coil can drive earpieces within 40 cm. 

The 35dB top sensitive microphone ensures partner can hear your whisper voices. Mute button helps to get rid of earpiece detectors.

Item Data
Mobile network Frequency GSM: 900 MHz
GSM: 1800 MHz
Audio Power 3.5 Watt
Transmission Distance to earpiece 50 cm
Battery Type 3.7V 900 Mah
Full Recharge 4 hours
Battery life  3-4 Hours (depends on volume)
Color Skin or Black
Measurements 57 x 37 x 17  mm (gram)
Pckaging Black box with Blister

Download Manual Download user's manual of SBL05 GSM Box

SBL05 GSM Spy Earpiece Box package includes: 

1 x SBL05 GSM Box with 3,5 watt amplifier
1 x Recharge cable
1 x USB Power Adapter cable

1 x Covert micro earpiece SE02 (you can also choose other models)
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 or German


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...

SBL05 GSM Box - with build in 3.5 watt amplified 

Recharge and active
Before use the GSM box, please recharge for a few seconds to active the battery.

The RED light will turn on while recharge.
Full recharge takes about 4 hours. After full recharged, the red light will turn off.

* You can recharge the battery while in phone conversation.


Load Sim Card
Please use regular SIM card (size 15 x 25mm)
Make sure the pins adown.

* Can not support new MINI SIM cards.

Turn ON / OFF
Press "Power" button and hold for 5 seconds, Blue light will flash 4 times, and able to hear "ding... ding..." alarm sounds in wireless earpiece.

In power on status, press "POWER" button and hold for 5 seconds will turn off the power also able to see Blue light flash 4 times and hear alarm nitice. 

Click the "Reset" button will turn off power immediately even its in the phone conversation status.

Battery life is 3-4 hours talking time.

* The "Reset" button is as flat as the housing. It ensures user will not push the "reset" by mistake.

In order to avoid been detected by inductive detectors, you can push MUTE button to cut off audio output.

After pushed Mute button, the phone conversation will keep online, you can speak to partner but can not hear.

Push the MUTE button again will ractive audio output. 

* Mute button is invalid in power off status.

Turn On Power Press "Power" button and hold 5 sec.
Turn off power 1) Press and hold "Power" for 5 seconds 2) Press "Reset" button
Stop audio output Press "Mute" button in phone power on status.
Receive a call Auto answer
Turning on or off power
Stay in Red Recharging power
Stay in Green In phone conversation
No indicator In power on or power off status. Press "reset" and turn on power.


Q. Why is not able to turn on power and no blue light?
A. Because the battery is inactive. To active the battery need to recharge the power for a few seconds. If RED indicator turns on, it means battery is activated and ready for work.

Q. Have turn on the power but can not pickup phone call?
A. 1) Please ensure the SIM card supports GSM900 and GSM1800 networks.
     2) Please connect to power adaptor and recharge for 4 hours. If battery power is low, can not pickup phone calls.
     3) Please check if your country have special rules on the IMEI number. Then contact our agent or contact our sales team.

Q. Its in phone conversation, have green light, but can not hear anything.
A. Please press the "MUTE" button to restore the audio output function.

Q. The volume is to low that can not hear clearly.
A. Please put GSM box within 50 cm to wireless earpiece. if the distance is more than 50 cm the earpiece can not pickup strong signal.

Q. The volume is too loud, how to reduce the volume?
A. GSM box maxed audio power and not able to change the volume.
Please put GSM box in further distance  to earpiece to get clear and comfortable sounds.

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......

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