You can know where the constellations, individual stars and even the planets are - instead of just guessing in the dark. Thanks to modern micro-chip technology, observing the night sky has never been more fun or more educational. Night Navigator is a unique, patent-protected scientific breakthrough that automatically finds what you want to see in the night sky. It also identifies what you discover on your own. The Night Navigator is easy to use, portable and can help you find up to 43 constellations, including all zodiac signs and all first-magnitude (brightest) stars visible from your location. Features 16 illuminated sky-view charts that are color coded and oriented to your point of view, built-in patented digital compass that guides you through the woods and requires no additional equipment. Requires 4 "AA" and 2 "C" alkaline batteries (not included).