Pre-assembled mechanism for easy assembly Can be applied up to 120 cm diameter Applicable figures from 70 to 120 cm diameter 7 cm long hour : 13 cm minute hand : 18 cm mechanism 10 cm (hangs on nails) number thickness 8 mm material wooden mirrored plexiglass (not sticker - Non-deformable durable material) numbers stick (quality adhesive) clock mechanism: Silent sweep movement, specially designed laser cut hour and minute hands are metal. It works with 1 AA battery. Ready for assembly. You can apply directly to the wall by removing the protector on the back of the pieces. There is also a protective gelatin in front of the plexiglasses. You can use a damp cloth during cleaning. More than 100 stocks are offered to be sold at the campaign price.