◆An all-black mechanical (automatic) model, one of the most popular models among the world's top brand SEIKO. ◆The all black dial is treated with black IP. Sharp-looking narrow hands and highly visible red second hand. The back cover is skeletonized, allowing you to visually enjoy the mechanical (self-winding) mechanism. ◆The watch is also fully equipped with a day-date calendar, light storage, and 5 ATM water-resistance. ■Movement: SEIKO mechanical (self-winding) ■Material: Stainless steel ■Skeleton back ■Day date calendar (English and Spanish) ■Screw back ■Three-fold push-belt ■Arms circumference: approx. 16 to 20 cm ■Size: Case (width) approx. 38mm (height) approx. 40mm (thickness) approx. 11mm ■Accessories: SEIKO box, warranty card, etc. ※ Due to Seiko's shift towards paperless operations, the inclusion of printed instruction manuals is gradually being discontinued. As a precaution, here is the URL for the English instruction manual for this model's caliber (7S26): https://www.seikowatches.com/jpja/-/media/Files/Common/Seiko/instructions/Japanese/7/7S26/7S26.pdf Please rest assured that we will notify you via message in case of any changes to the URL.