Star Trek: The Original Series Tricorder Prop Replica: Get ready to join an Enterprise landing party with this detailed toy tricorder from the original Star Trek series with authentic lights and sound! Open the top flap to reveal the recording discs and the moire pattern, which moves when you press the center button. The lower compartment contains more molded recording discs and a separate handheld scanner, which pulses with different colored lights when it is activated. The tricorder is based on careful study of the original prop. It is full size and measures 7 1/4-inches tall x 4 3/4-inches wide. The tricorder takes 3x “AAA” batteries, which are not included. 7.25 inches (18.42 cm). 4.75 inches (12.06 cm).