◆This is one of the most popular chronograph models from the world's top brand SEIKO. The watch has a black face with a tachymeter accent. ◆The watch has a stylish design with a calm atmosphere and is recommended for both casual and suit style. ◆The watch is equipped with a 1/20 second high speed center chronograph, date calendar, lumibrite, tachymeter, 10 ATM waterproofing, etc. ■Movement: SEIKO quartz ■Material: Stainless steel ■Small Seconds ■Tachymeter ■Date calendar ■Screw back ■Lumibright (hands and indexes) ■Size: Case (diameter) approx. 39 mm x (thickness) approx. 10 mm ■Weight: Approx. 112 g ■Arm circumference: approx. 14-20 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.