SPECIFICATION: Material: Plastic, Power: 2 x Button Batteries (Included).
• PREMIUM QUALITY: Built with high-quality materials that make it last for a longer period.
• EASY TO USE: Glows automatically when the drink is added and turns off when there is no drink left.
• SAFE TO USE: Environment-friendly and non-toxic material makes the tumbler safe for the drinks.
• MULTIFUNCTIONAL: Perfect decorative item for dinner parties, cocktail parties, bars, pubs and others.