Puzzle type Assembly and Disassembly Manufacturer recommended age 14 years and up Number of Pieces 289 Item Dimensions LxWxH 12.5 x 9.2 x 2.2 inches About this item [LED SWING RIDE KIT]This 3D wooden puzzle takes 6 hours to complete. When you press the switch, the lights will on and the music will play. Besides, the flying chairs and mirror tower will rotate automatically. [WONDERFUL GIFT]High standard STEM project and 3D puzzle for adults and kids.The bright appearance and interesting assembly process will attract people of different ages.A wonderful STEM gift for your friends and family. [PACKAGE CONTAINS]The package contains simple tools,wax and sandpaper.Spare parts are also contained for accidental damage and loss.It doesn't come with glue and batteries.Please prepare 3Pcs AAA batteries. [TIP]Sanding the gears with sandpaper and wax it will make the 3D puzzle rotate more smoothly.Don't use too much force when assembling, but look for skills, which can reduce the probability of part damage. [QUALITY THROUGHOUT]We utilizes industry-leading technology to produce best 3d wooden puzzles.All pieces are laser-cut and the error is less than 1/5000 inch,make sure each part fits tightly.