1. This music box is made of Acrylic. It is a clear hand crank music box. 2. It is with a hand crank 18 note musical movement, the movement is made by Sankyo from Japan with golden color plated, the second famous musical movement supplier in the world. 3. The music is coming when you crank the handle, you can control the play speed by your hand. 4. Each music box plays only a melody, and it will play about 15 to 20 seconds of the part of the melody you choose. 5. The Net weight of music box is about 85 grams (3.00 oz). Music Box Size: Length 6.00 cm (2.36 in) (8.00cm with the handle) Width 5.00 cm (1.97 in) Height 3.00 cm (1.18 in)