Unique Transparent Musical Box Acrylic Hand Crank Music Box, Melody Castle in the Sky The music box is made of high quality acrylic box with metal movement, which makes it transparent, you can see how the movement works. Hand crank: Continuous cranking required for music to play. If stop cranking, the music will be paused. Item dimensions: 8.2 * 5.1 * 3cm / 3.2 * 2 * 1.2in It can play the melody "Castle in the Sky", with 18 notes rhythm. A cute, creative product for your friends, spouse, sweetheart, relatives, or yourself as a gift.