Features 1、Just press the button and all the dice in the cup will roll automatically. 2、Users can open transparent roof cover to replace dice. 3、Electric cup which is powered by 2 AA batteries (battery are not provided). 4、Green sponge base to reduce dice throwing sound. 5、The black lid is used to make sure the opponent won't see your dice. Features: Just press the button and all the dice in the cup will roll automatically. Users can open transparent roof cover to replace dice. Electric cup which is powered by 2 AA batteries (battery are not provided). Green sponge base to reduce dice throwing sound. The black lid is used to make sure the opponent won't see your dice. Light, portable, suitable for outdoor party or bar entertainment. Specification: Color: black Material: Plastic, Electronic component Battery: 2x AA Batteries (Not included) Dimension: approx. 14.2x11.7cm / 5.6x4.6in Weight: approx. 268g Package List: 1 * Automatic dice cup 5 * Dice Package List