"Elevate your party experience with our Multi-color LED 20 oz. Skull Mug! A must-have for pirate-themed events, nightclubs, festivals, and rave parties, this mug is sure to make a statement. With a capacity of 20 ounces, it's perfect for holding your favorite beverage. Simply press the button on the bottom of the glass to activate the multicolor flashing LED light, which offers three dynamic light modes: fast flashing, slow flashing, and constant on. Each mug comes with 3 AG13 batteries included, installed, and replaceable for endless fun. Sold individually in color boxes, please order in increments of 1 mug."