Useful Links
An entry in Wikipedia.org on baby monitor
A baby monitor, also known as a baby alarm, is a radio system used to remotely listen to sounds made by an infant. The transmitter, equipped with a microphone, is placed near to the child and the receiver equipped with a speaker, is carried by, or near to, the person caring for the infant.
http://en.wikipedia.org/wiki/Baby_monitor
A review in consumersearch.com on Summer Infant Day & Night Handheld Color Video Monitor
Professional reviews say that video and audio quality on video monitors in general just isn't up to par, but many regard the Summer Infant Day & Night Handheld Color Video Monitor as an exception.
Zoom H2 Handy Portable Stereo Recorder
Zoom H2 Recorder is a must-have for everyone who wants to record pristine audio. It is a device conceived from a simple idea, that is to provide brilliant stereo recording in an easy-to-use, ultra-portable device.
Bushnell 2.5x42 Night Vision Monocular
Bushnell Night Vision Monocular is the state-of-the-art device for providing vision in dark condition. It is capable of work in very low-light condition, even in total darkness when there is no ambience light whatsoever.
http://www.bushnellnightvisionmonocular.net
Celestron Skyscout Personal Planetarium
Celestron Skyscout Planetarium is truly a personal planetarium. It is a powerful device which can accurately pin point any sky object, and present relevant information on that object through text on the display as well as through audio.
http://www.celestronskyscoutplanetarium.com