The Perfect Drug Expertly crafted from genuine medical-grade materials, these 30 ml Halloween Medical Prop Vials come with a complimentary LED light-up disc for display purposes. Designed with secure seals, these vials are perfect for prop and display use. Measuring 3 inches in height and 1.5 inches in diameter, the included LED disc provides a one-time use and can last for many hours. Please Note: Batteries are not replaceable. Vials measure 3″ x 1.5″ LED-Disc batteries are non-replaceable 3 LED settings: fast flash, slow flash, steady-on