Bluetooth Spy Earpiece Mini Micro Spy Earphone Bluetooth Inductive Loopset Earpiece Size Only 3 X 5 X 7 Mm Bluetooth Spy Earpiece Mini Micro Spy Earphone Bluetooth Inductive Loopset Earpiece Size only 3 x 5 x 7 mm Application The advantage of using state of the art technology is fundamental in situations where covert communication are required. This extra small Bluetooth micro earpiece and sensitive microphone permits you to receive real time information or communications without being noticed. Students, Law enforcement officers, Private investigators, Businessmen, Gamblers, Politicians, all can find a use for this incredible new device.