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Omnidirectional electret microphone. 4.5 mm long connecting pins. S/N ratio: 60 dB. Sensitivity: -44 dB.
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This two way GSM audio device calls you when it detects sounds around its vicinity. Trying to find out the truth about what's being said behind your back?. Now you can from a distance. You can even place several of these audio devices and set them up at your desired locations like the bedroom, living room, conference room or office.
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Electret microphone. Features 2 small pins for connection.
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And Portable USB 2.0 Condenser Microphone Mic. The -555B is a portable and practical USB 2.0 condenser microphone, which adopts USB 2.0 plug to make it work with any USB-equipped computer, features noise-canceling design, and is specially designed for chatting over, SKYPE, singing over Internet and gaming.
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Quad-Band GSM Loop now is powered by new 4 Watt audio amplifier and now offers more powerful output audio signals. GSM Module allows you to use neck loop device independently without mobile phone. Just insert the SIM Card in device. The smallest high quality hidden Spy Earpiece. It's tiny size Dia7xH11mm makes it completely invisible in the ear canal. Works with all of the inductive transmitters. It has new advanced battery holder, no worry about broken battery holder any more. The smallest hidden Spy Earpiece is with an optimum anatomic design.
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Electret microphones. Features 2 small pins for connection.
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