ROBOTIME ROKR 3D Puzzles for Adults-Projects for Teens-LED Swing Ride Model Building Kit-Music Box DIY Kit-Gift for Teens and Adults

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. High standard STEM project and 3D puzzle for adults.The bright appearance and interesting assembly process will attract people of different ages.A wonderful STEM gift for your friends and family. 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. 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. ROKR 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. ROKR offers replacement of damaged parts.If there is any problem, we will help to check and provide guidance.Just contact us and we will reply within 12h.