Kspyworld

This model is the latest Radio based model that is having more range than any other model and also having more than 127 channels that work individually from one to one system. Best for Drama companies and Seminar organizers. 
The hand radio device is having 
Radio Frequency IC: Upgraded SQ to enhance the anti-interference abilityRDA1846S adds a new tail tone elimination function when transmitting and receiving a signal between 50Hz with 55HzImproves the receiver AGV switching noise when signal strength changes severely

Frequency-Modulated Receiver Chip: The RDA5802N has a powerful low-IF digital audio processor, which makes it have the most optimum sound quality with varying reception conditionsPower Amplifier IC: Low crossover distortion low quiescent circuit currentN5R Firmware (August 2014)Hold ‘0’ – Display Voltage. 

The maximum range is from 200 Meters to 1 KM in open areas like playgrounds or any open field. 
This is the latest model in Radio based in India. 

(Jammer Free Banyan, 128 channel Jammer Free devices, 100-channel Jammer free device)

Additional Information:

• Item Code: XC200
• Production Capacity: 1000+ pieces
• Delivery Time: 8-10 days
• Packaging Details: The product packaging will involve a careful and efficient process to ensure the safe transportation and presentation of the item. A sturdy wooden box will be chosen as the packaging material, chosen for its durability and ability to withstand external pressures during transit. The wooden box will be crafted to precise dimensions, providing a snug fit for the product to minimize movement and potential damage.

This is the latest model of GSM box with electronic Spy earpiece. It's a complete set for talking secretly with anyone. The transmission distance is 80 CM+ from earpiece and MIC is very sensitive and can catch even very whispering sounds from long distance. 

Features 
80 CM + distance between earpiece and MIC
Auto call receiving function 
2 Hrs battery backup 
Nano SIM support
100% clear sound

Box contains - 
1 GSM box
1 earpiece 
2 earpiece cell 
1 charging cable + Charger