The movement is equipped with Audemars Piguet’s self-winding movement caliber 3129, which has a power reserve of 60 hours. You can see the movement of the elaborately assembled gears and the beautiful decorations from the front and back. Although it is not limited edition, it is a rare model with a small number of pieces produced. It is in very beautiful condition with no noticeable large scratches. Model Royal Oak Skeleton. Drive method: automatic winding. Dial color skeleton dial. Size Case diameter: Width approx. 39mm Maximum arm circumference: Approx. Accessories: box, repair statement (2018/6), repair card. Remarks: Mechanical inspection and operation confirmed. The belt size is the size of the total arm circumference including the casepart. If there is a notation for dimensions, please note that some errors are dueto amateur measurement. I think that the picture is different depending on the screen of thecomputer. Please do not return because the color is not the same as the one in theimage. For customers living in the USA. International Buyers – Please Note. We won’t under-value merchandise or mark the item as a gift on customsforms. Doing that is against U. Please note that we may not be able to meet your request.