The pen microphone appears identical to an ordinary ballpoint pen.

Thanks to the perfect disguise and a powerful, embedded electronic preamplifier, it is able to record conversations up to 10 times better than an ordinary microphone would do (53dB gain!).

Connects to any ordinary voice recorder (either analog or digital) by means of its mono jack plug and can be powered by any 9VDC PP3 type battery easily available on the market. The very special make allows perfect concealment in a pocket without hindering acoustic recording capabilities.