*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 module
 
To use the electronic earpiece your ear canal has to be clean so that the small electronic earpiece could smoothly go inside the mid canal of the ear properly and safely. This electronic earpiece has cells inside, and the battery life of these cells are 4 hours. The cells need to be replaced after their life. Electronic earpiece are slightly bigger in size compared to magnetic earpiece and are louder than magnetic earpiece.
 
Cautions - 
Don't use this earpice for longer time. 8 to 9 hrs is maximum use time since it's electromagnetic ways might harm if exposed for longer durations. 
Never sleep with magnetic earpiece in your ear
Do not insert forcefully. Don't push the earpiece as they might harm your ear canal/drum. 
The buyer shall not use the product for any illegal purposes and shouldn't permit anyone to use the product in any kind of unlawful activities. We promote our products for betterment for our lives not to go against law, or humanity.
 
Package 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.