Lifetime Basketball Double Shot Arcade System Infrared scoring sensors for sure scoring; For one or two players Electronic buzzers and sound effects create a fun arcade atmosphere Convenient fold-up design for safe, easy storage. Assembled Dimensions- 90 H x 51 W x 90 L inches. Tubing Diameter-1.5 inch - 1.75 inch Adjusts in height from 82" to 90" Basketballs: 7" Rubber Basketballs (x 7), Pump & Needle Included Infrared Optical Sensors Provide Fast and Accurate Scoring Convenient Fold-Up Design for Safe, Easy Storage Electronic Buzzers and Sounds Effects Create a Fun Arcade Atmosphere Uses Standard AC Electrical Outlet - Also Compatible with (4) AA batteries Ramp Materials: Heavy-Duty Nylon Canvas with Side Netting. Rim Diameter: 12",Backboard Dimensions: 48" x 22",Weight: 80 lb. (36,2 kg)