Instructions: Remove the plastic pull tab from the battery housing behind the basketball board. Move the Rock n Score Basketball Game up and down to try to get the basketball through the hoop. The bright LEDS and sounds will be activated when the ball passes the hoop. Diameter: 3.50 in. , 8.89 cm. LED Colors: Blue and Red Batteries: Includes 3 Replaceable AG13 Batteries. – Weight: 0.57 LB