Bluetooth Inductive Vest with Micro Wireless Earpiece Mini Smallest Most Invisible Earphone Full Kit

This Bluetooth inductive vest is more invisible than Bluetooth neckloop, which all components build inside of vest (when wearing vest, please take care of it, don't pull the vest because of inside with tiny copper ), and from outside cannot see the difference with normal vest, just wearing like normal vest
The microphone was built below of shoulder part, so can get clear and loud sound even whisper
The Bluetooth induction was built-in the bottom of vest, which it's easy to operate without noticing
And the size of vest is XXXL, made of stretch cotton, which could fit all people