Mini Hidden Spy Earphone Wireless Earpiece Headset (Coil Connector only)

Product Description
This induction coil is a miniature wireless induction device. The user wears the coil on the neck and connects to a mobile phone or MP3 device through a 3.5mm audio port. The audio signal of the mobile phone can be converted into an electromagnetic induction signal and transmitted to the wireless earpiece. Compatible wireless earpiece are A680, 918, 305, etc. There are microphones and call/hang up buttons on the coil, You can communicate with others freely once a network exists when you use a mobile phone. It is widely used in many situations. Such as speech prompts, exam prompts,etc. The induction coil can be easily hidden under clothes, It makes covert communication possible when it is inconvenient to expose earpieces. Induction Coil length : 40cm Cable length: 80cm Receiver type : magnetic/analogue