New Spy Earpiece Invisible 3.5 Ampflier Bluetooth Neckloop Covert Gadget and Nano Micro Covert Earphone Bug Connect to Phone

2014 updated design of amplified Bluetooth neckloop now is powered by new F class audio amplifier. New upgraded Bluetooth neckloop now offers more powerful output audio signals and same power consumption (if volume is the same). Upgraded V3 version allows you to pause/play even change songs by simply click buttons. Mute function is also works for music player. Cancelled alarm notice while change volume. The amplified Bluetooth neckloop is featured by theMUTE function and SOS function. Mute button allows you to easy cut off audio output and avoid earpiece detection. After tape mute button no signal transmit to earpiece and phone conversation is still online. SOS function helps you to send remind signal without say a word.