Suggested Retail: $36.89. Kinetic Art Perpetual Motion Machine - This Kinetic Art Perpetual Motion Machine is a fun physics toy that combines knowledge with play. The smooth line design allows the ball to circulate infinitely, making it a creative and sophisticated addition to any desk. It also serves as an effective stress reliever. The machine is designed with complex technology that requires accurate building and testing. It is an upgraded model made of high-quality plastic, with features such as mute operation, continuous use, and a touch switch for easy use. Model: Newest Model No Sound Rolling Ball Perpetual Marble Machine -- LOT STICKER: TCE-BOX-PALLET00001-ITEM-LPNRRFV3324901-b1bf3435 -- SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.