Pursuestar 18 Note Hand Crank Musical Mechanism Craft DIY Music Box Movement Melody - Twinkle Little Star Size: approx. 4.4cm*3.4cm*2.0cm (1.73"*1.34"*0.79") Material: silver-plating metal, quality made. Please uniform to shake the handle. The music box ring when you shake the handle. When you place it in a box or on a surface and crank it the sound is definitely louder and fuller! Therapeutic function for kids and adults - holding this little music movement, winding it, watching the little gears move, and listening to the music, which in itself is soothing to the ears. You can install the movement into a DIY box, such as paper box, wooden box, glass box, plastic box and metal box, you can create your own music box. You will be very excited after finishing your artwork. And it is also a precious and meaningful gift for yourself and your friends. Or you don't need to put it in a box, just play the movement on the desk, seeing its gears move, listening the pure tune, very interesting!