This is a white silver-tone alarm 1/20th second chronograph from the world's top brand SEIKO. The white dial is accented with a tachymeter on the bezel and is suitable for executives. The watch is stylishly designed and also has a calm atmosphere, so it is recommended for both suit and casual style. The specifications also include a chronograph with 1/20-second counter, date calendar, and luminescent finish. Movement: Quartz 7T92 1/20-second, 60-second, 60-minute, and 12-hour totalizers Tri-fold buckle belt Date calendar Tachymeter Crown guard Lumibrite luminescent treatment Water-resistant to 100 meters (10 atmospheres) Size: (diameter) approx. 39 mm, (thickness) approx. 11 mm Arm circumference: approx. 16 to 19 cm 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 (7T92): https://www.seikowatches.com/jp-ja/-/media/Files/Common/Seiko/instructions/English/7/7T92/7T92.pdf Please rest assured that we will notify you via message in case of any changes to the URL.