Ratchet winding mechanism on the left side of the case for winding, an upper lever on the right side for selecting one or all 8 songs, a lower lever on the right side for start/stop, roller as far as visible without defects, 85 tongues. Probably walnut veneer, inlays on the lid (handmade), the sides and back are walnut wood, the work is protected by a glass pane framed in wood, the age is in very good condition. Video on how it works: https://youtu.be/TwftUD07gPk Dimensions Length:. 51 cm x width 21 cm and height: 14 cm Weight: 10.8kg