Be the first to identify an unidentified flying object with this kit. The UFO Detector is designed to sense magnetic and electromagnetic disturbances and will signal their presence by flashing an LED and beeping an alarm. Its elegantly designed transparent plastic case is a handsome sculptured conversation piece that reveals the high tech electronics inside the case, making it an intriguing addition to your desk, bookcase, or dresser. The assembly of this detector requires soldering electric components and gluing plastic parts. Requires a 9V lithium battery, not included. Size: 3 ¼”dia. by 5 ¾” tall. Uses 9V lithium battery (not included).