3.5 mm neckloop with MICSPY earpiece complete set

Earpiece working principle* - The tiny spy Earpiece ( electronic or magnetic ) is just a tiny device for producing sounds inside the ear by receiving EMW signals from any transmission module ( any Bluetooth module - Bluetooth neckloop , Bluetooth banyan, Bluetooth box Or any GSM based product or any MP3 module ). *earpiece alone can't work. It will need some transmission module for it's working* A complete set includes everything - Earpiece Transmission modulePackage includes -
1 M spy electronic earpiece
1 Wired neckloop 
2 X 416 earpiece cell

For power model - You will get one charging cable and Charger also.