Invisible Secret Spy Earphone Nano Wireless Earpiece for Mobile Phone

This mini earpiece is an electromagnetic wave inductive and receiving device with a micro earpiece designed to fit exactly in ear canal for secret communication. The sound is clear, but not as loud as a normal earphone, so it’s not recommended to use in a loud area.
-Communication for Security
Extra small wireless earpiece permits you to receive real time information or communications without being noticed.
Completely hidden and discreet communication
Works with any mobile phone with a 3.5mm jack or with the use of an adapter