3 watt amplified audio neckloop with magnetic earpiece, 3.5mm plug

Feature:

•     Magnetic earpiece is very tiny, when put into ear, it's invisible to eye.
•     With the 3.5mm audio jack, it's easily to connect to mobile phone.
•     Built-in rechargeable battery, easy to carry, better sound quality.
•     Economic solution for secret communication: cheating at examination, negotiation assistance and so on.

What in package:

•     2*  Φ:3*2mm small magnet earpiece
•     1*  Φ:5*5mm big magnetic earpiece
•     1 steel sticker for taking earpiece out from ear
•     1 Micro USB charging cable
•     1 neckloop