Slim cube shape, tiny outer size, entirely concealed in ear canal. Spy Nano Earpiece in ear ist the smallest wireless electrostatics receiver. With smallest hidden spy earpiece, you can setup your own covert communication system while secrecy and privacy are of paramount importance. You can use the smallest nano in ear in applications of surveillance, VIP protection, investigation, to cheat a test and so on. No one will notice user is wearing spy nano earphone. Nano earphone well know by its skin color and bean shape. The main part of earpiece is skin color. You can choose from skin color and black color. Key features: Smallest size with loud sound and clearer voice Completetly invisible deeply into ear canal Semi-circle tail enhanced covert function Sensitive wireless receiver with clearer voice Wireless receiver drove by all inductive transmitters Powered by tiny #337/#416 button battery 5-6 hours battery life support Easy operation (user manual available) How does it work? Nano spy in ear build in a smallest receiver coil and speaker. While nano coil received magnetic signal from transmitters, the embedded circuit systems will transfer wireless signal to audio soun
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