This is a vintage party ball that has fiber optic lights which cascade down the ball and change colors as it rotates! Think I've had it since the 1980's but could have been the 1970's - partied in both decades! (HaHa) It looks like a glossy black bowling ball but is way more fun. It measures about 15" high (without the lighting added height) and it's 'waistline' is about 31"! It's about as Plug N Play as the times allowed - has an electrical cord and a roller wheel off/on. In the pics, I clipped some additional info about it. It's in great shape - the last pic shows the only flaw - looks like at some point I scuffed the edge of the base, so pictured it. Named the Sunburst Model 4000 , it's definitely iconic & classic. ... how cool is that!?! Disco! 🕺 Please, feel free to make an offer - I’ll accept or present a counteroffer OR add your ‘likes’ to a Bundle and I’ll send a private offer just for you. I’m happy to answer questions to clarify anything I have not described in enough detail. The goal is for you to be informed about the item and extremely pleased if you choose to purchase it.