Kspyworld

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