This is the North American model of SRPD51K2, and at first glance it looks the same as SRPD51K2, but since this SRPD87 is equipped with a Japanese movement, there is [MOV'T JAPAN] printed on the edge of the dial at 6 o'clock. (*Please note that items without [MOV'T JAPAN] printed on the edge of the dial at the 6 o'clock position are not SRPD87, but SRPD51K2.) [Size/Weight] Case size (length x width x thickness) ): 46 x 42.5 x 13.4 (approx. mm), belt: width approx. 22 mm, lug width approx. 22 mm, arm circumference length (longest) 220 mm, mass: approx. 94 g [Material] Case: stainless steel, belt: nylon, Windshield: Hardlex crystal [Waterproof performance] Reinforced waterproof for daily life (10 ATM) [Caliber No.]4R36 Automatic winding (with manual winding function and second hand stop function) *The calendar is bilingual [English] &Arabic], [English & Spanish], and [English & French], etc., and it is not possible to specify the language as the items 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)