This is a Emergency Transporter Armband featured in the fan favorite Star Trek: The Next Generation episode "The Best of Both Worlds Part II". These were used by Data and Worf while aboard the Borg cube, in case they needed to transport back to the Starship in a hurry. The main body is made form cast resin and features the Starfleet logo on the front with silver and beige details. There is a small switch on the bottom that activates two red LED lights on the front. Item measures 3" x 1.75" x 1", and remains in excellent condition. From the collection of Joe Longo.