Pursuestar Acrylic Crystal Hand Crank Gurdy Gold Movement Mechanism Music Box Wedding Valentine Christmas Birthday Gift - Happy Birthday Size - About 7.1cm*5.1cm*3.1cm, adorable and affordable little gift. Sturdy Material - Beautiful tune and quality made. The outside of music box is made of acrylic, the inside and the crank are plated with gold. Easy Design - Even the 20 month-old can crank the music box, it is covered in plastic so kids can see the gears and how it works but they cannot touch it. Therapeutic Function For Adults - Holding this little music box, winding it, watching the little gears move, and listening to the music, which in itself is soothing to the ears. Expensive looks - No matter how many times you play the music box, there is not any fingerprints on it either.