Our Multi-color LED 20 oz. Skull Mug is a great add-on you should never miss! Perfect for pirate-themed events, nightclubs, festivals, and rave parties. Our multi-color LED Skull Mug can hold 20 ounces of your favorite beverage. To activate the multicolor flashing LED light, press the button on the bottom of the glass. It features 3 light modes: fast flashing, slow flashing, and constant on. 3 AG13 batteries are included, installed, and replaceable. Sold by 1 piece LED Skull Mug per color box. Please order in increments of 1 mug.