Chronoswiss Opus Chronograph Automatic Wristwatch Mechanical Wristwatch Automatic Chronograph Skeleton Date Display Blue Steel Brand Name: CHRONOSWISS Model Name: OPUS Movement: CH7523 cal.741S Automatic Wristwatch (Manual winding possible) Case Diameter: Approximately 38mm (41.5mm including the crown) Daily Rate: Approximately ±5 seconds (measured) Frequency: 28800 Operating Time: 46-hour power reserve Water Resistance: 3 atmospheres Case Material: Stainless Steel Accessories: Main body, original outer box, inner box, guarantee card (unfilled) Condition: No scratches on the crystal or the case back glass. There are some scratches near the lug screws of the case. Please check the enlarged images. The belt shows signs of use, but is still usable. Both the dial and hands are in beautiful condition, and the chronograph function and date change are working normally. *All images are taken of the actual watch. *The serial number is hidden. This is the legendary skeleton chronograph, the OPUS, from Chronoswiss. It has been skeletonized to the limit, allowing you to admire the beautiful movement from both sides. The hands are also beautifully blued steel, and the various instruments shine a vivid blue depending on the light. It was sold under the name VITA in Japan, but this is the OPUS version sold in Europe. At first glance, it may seem like a regular chronograph, but the instrument on the right is actually a date display, adding to its complexity. This watch is recommended for those who love chronographs, as well as those looking for a masterpiece from the early Chronoswiss era.