SWING RIDE TOY: Build both a realistic swing carousel machine and music box at the same time. The 3d puzzle will swing to the music when you touch its switch. And the romntic lights will fliker like you are in a real amusement park. Melody: "Merry GoRound" MECHANICAL MODEL KIT: No glue is required. Just construct built-in gear trains to drive the motion of the 3D puzzle. The roof and chairs will rotate in the oppisite direction to that of pillar. So much fun to play and watch. Equipped with a senser unit for lights, this music box simulates a lively atmosphere of park upon touch. It will reminds you of lots of beautiful memories. Please prepare 3 pieces of AAA batteries yourself (not included due to shipping policy). GIFTABLE PACKAGE: Cool gift idea for both kids and adults.The package is beautifully designed. It comes with everything you need: Step-by-step manual, pre-cut wood sheets, a music movement, lights, wire, wax, sandpaper. Laser-cut parts is easy to popput and fit well together. Much free time at hands? Grab the time-worthy kit and you will have a really pleasant time with family. See how the mechanism come into life in your hands. Once finished, it can be a unique touch to home.