A spy voice recorder does two things, it records a person talking or any noise that needs to be recorded for future evidence and use. The other major thing a spy voice recorder does is it secretly records so no one is aware of the recording.

Weapon

Camera

Money

Magnifying glasses

Binoculars

Spy Glasses

Tape Recorder

A recorder pen is different from a normal pen because on top of being used as a pen, it can also be used to record audio and video. Recorder pens are sometimes called spy pens.

The digital video recorder spy name is the best cheapest video and audio surveillance to use in a house to spy.

The recorder amplifies ambient sounds directly to your ear. basically it is a really powerful hearing aid. for more information refer to http://www.brickhousesecurity.com/minipen-hiddenspy-voicerecorder.html