Complete calendar. This watch has four complications which will show you everything in just a glance: you will be able to know the day of the week, the day and the month at the same time, and the time of day or night that it is. Power reserve system. Through this complication the watch shows us how much power it has left, i.e. how many hours of use it has left. Guilloche decoration The white dial is decorated with the guilloche technique in which geometric lines are distinguished by being embossed that intertwine and twist to form different effects that enhance the reflection of the light Technical specifications: Mechanical automatic movement with 26 anti-friction jewels. Dial engraved in guilloche and Breguet style hands. Case diameter excluding crown: 39.7 mm, thickness: 12.6 mm Inner strap size and case: 18.6 cm Dual safety clasp system Reinforced mineral crystal on the front and back. Features: Power reserve system at 12 o'clock. Day of the week display at 9 o'clock. Month display at 3 o'clock. 24 hour (day/night) dial at 6 o'clock Calendar between 4 and 5 o'clock Power reserve of approximately 40 hours. Casing, crown, and clasp in stainless steel. Steel strap with clasp and push button Water resistant: 5 ATM. Case size 40 mm excluding crown. Automatic Miyota machinery. Weight: 129.6 g Sent via SEUR international, insured and with tracking number.