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The Kspyworld Single SIM GSM Box with Hidden Earpiece is a compact GSM-based communication system designed for discreet, hands-free audio communication. Simply insert a compatible SIM card into the GSM box and use the supplied tiny electronic earpiece to hear incoming calls privately.
The device features automatic call answering, approximately 40 cm signal range between the box and earpiece, up to 4 hours of battery backup, smart charging, and a highly sensitive microphone capable of picking up low-volume speech.
Its compact size makes it easy to carry in a shirt pocket, while there is no visible LED indication or external speaker sound during a call.
Experience compact and convenient GSM communication with the Kspyworld Single SIM GSM Box with Hidden Earpiece.
This device has been designed for users who need a small and portable GSM communication system without using a large Bluetooth headset or wired earphone.
The GSM box works with a compatible single SIM card and transmits the received audio to the supplied tiny electronic earpiece. The earpiece is designed to sit discreetly inside the ear while the GSM box can be conveniently carried in a pocket.
Key Features
Single SIM GSM Connectivity
Insert a compatible GSM SIM card directly into the device for independent calling functionality.
Approx. 40 CM Earpiece Signal Range
The GSM box can transmit audio to the tiny earpiece from a distance of approximately 40 cm, allowing the device to remain conveniently inside a shirt or trouser pocket.
Up to 4 Hours Battery Backup
Provides approximately 4 hours of continuous calling time per full charge, depending on network conditions and usage.
Smart Charging System
The integrated charging system is designed to manage charging efficiently and support better long-term battery durability.
Automatic Call Answering
Incoming calls can be answered automatically, reducing the need to physically operate the GSM box every time a call is received.
No External Call Sound
During a call, the received audio is heard through the supplied hidden earpiece rather than through an external loudspeaker.
No Distracting LED During Calls
The design minimizes visible indication while the device is being used for communication.
Highly Sensitive Microphone
The built-in microphone is designed to pick up low-volume speech, including soft or whispered communication when the device is positioned close to the user.
Small & Compact Design
Lightweight and pocket-friendly, making it easy to carry without bulky equipment.
Ultra-Small Electronic Earpiece
The supplied earpiece provides private listening in a very compact form factor.
What You Get in the Box
Each package includes:
- 1 × Kspyworld Single SIM GSM Box
- 1 × Hidden Electronic Earpiece
- 2 × Earpiece Cells/Batteries
- 1 × Charging Cable
Product Specifications
SIM Type: Single SIM
Communication Type: GSM
Earpiece Type: Tiny electronic hidden earpiece
Signal Range: Approx. 40 cm between GSM box and earpiece
Battery Backup: Up to approximately 4 hours per charge
Call Answering: Automatic
Microphone: Highly sensitive built-in microphone
Charging: Smart charging system
Audio Output: Through supplied earpiece
External Speaker Sound During Call: No
Form Factor: Small, compact and portable
How It Works
Insert a compatible SIM card into the GSM box and power on the device. Once connected to the mobile network, the unit can receive calls through the installed SIM.
The GSM box transmits the incoming audio to the supplied tiny earpiece. The built-in microphone allows the person on the other end of the call to hear your voice.
For best performance, keep the GSM box within approximately 40 cm of the earpiece.
Earpiece Battery Information
The tiny earpiece uses a small replaceable cell. Two earpiece cells are included in the package, so the customer receives one additional cell for continued use.
Battery life of the earpiece cell can vary depending on usage and storage conditions.
Important Compatibility Note
This model is designed specifically for the supplied electronic hidden earpiece. Use only compatible earpieces recommended for this device.
Mobile network compatibility may vary depending on the network bands and services available in the customer's country or region. Customers should verify compatible GSM service before purchase.
Recommended Usage
This product is intended for lawful personal and professional communication applications only. It should not be used to violate privacy, examination rules, workplace policies, local regulations, or any applicable law.
Kspyworld Single SIM GSM Box with Hidden Earpiece – Auto Call Answering | 4 Hrs
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