This is the smallest size bluetooth micro ear piece inductive receiver. It fits inside ear canal completely with almost double spare. Nobody can ever notice you have any ear piece watching directly at your ear from close distance. Nobody can ever hear any sound produced by the ear piece from the outside. If you can find less size one anywhere - let us know, and you will get the price drop!
The smallest of any competitive earpiece is larger. Competitive units are not true security devices, since they are partially visible in ear. And this must hide in canal completely and not be visible from close and deep look at ear. When it comes to professional security, this matters.
The device is used the same way as you would use any other hands free or Bluetooth set with your phone except its small size and skin color makes it invisible for others. All you have to do is to connect the set to your sell phone and make or receive calls like you do regularly. The wireless earpiece receives the signal from the phone through the transmitter.