[Size/Weight] Case size (H x W x D): 48.1 x 39.4 x 13.2 (approx. mm), belt: width approx. 18-20 mm (ring width approx. 20 mm), arm circumference length (longest) 205 mm, mass: Approximately 146g [Material] Case: Stainless steel, Belt: Stainless steel, Windshield: Curved Hardlex crystal ・[Waterproof performance] Reinforced waterproof for daily life (10 ATM) [Caliber No.] 4R36 Automatic winding (with manual winding, second hand stop function, calendar (date/day) function, number of stones 24 stones) *The calendar is bilingual and available in [English & Arabic], [English & Spanish], etc., and it is not possible to specify the language as it will arrive randomly. If you contact us before purchasing, we will let you know the languages in stock. [Accessories] Japanese instruction manual (copy), foreign language instruction booklet, cosmetic case (SEIKO cosmetic case is included, but the design differs each time it arrives) In 1968, five years after the birth of the Seiko Sportsmatic 5, commonly known as the Seiko Five, which was released by SEIKO in 1963, the specifications and design were changed to a sports style in response to the sports boom of the time. The new Seiko Five Sports has been updated to modern technology and design while still being equipped with the five basic functions inherited from the first generation.