This is an 18-note music box core mechanism with electric drive and built-in rotation function, primarily used in crystal balls, rotating ornaments, and DIY musical gifts.
On the left side is a DC micro motor, with red and white leads connected to a power supply (3V). After being powered on, it drives the sound tube and steel comb to operate and produce sound through a gear set. At the same time, it drives the top disk to rotate at a constant speed, without the need for manual winding, and can continuously play in a loop.
The top is equipped with a metal disc and a brass connecting rod. The disc can be directly attached to ornaments and crystal ball bases.