Seiko 5 SPORTS Field Series Mechanical Watch Seiko Five Sports Made In Japan SRPJ81 Black Overseas Model [Seiko] Mid-size Men's [Item]

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. [Size/Weight] Case size (length x width x thickness): 44.4 x 36.4 x 12.5 (approx. mm), belt: width approx. 16 mm (buckle side) to 18 mm (case side), lug width approx. 18 mm, arm circumference length (longest) approx. 205 mm, mass: approx. 114 g [Material] Case: Stainless Steel, Band: 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 is basically [English & Spanish], but there are also [English & Arabic], [English & French], etc., and we are unable to specify the language as the calendar 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) This is a mid-size model with a case size of 36.4 mm, recommended for those with narrow wrists. [Main specifications] ●Caliber No.: 4R36 ●Drive system: Mechanical automatic winding (with manual winding) ●Accuracy: +45 seconds to -35 seconds per day ●Driving period: Approximately 41 hours at maximum winding ●Case material: Stainless steel ●Glass material: Curved Hardlex ●LumiBrite: Available (hands/index) ●Band material: Stainless steel ●Waterproof: Reinforced waterproof for daily life (10 atm) ●Magnetic resistance: Yes ●Other features: Double lock clasp, see-through screw back (Due to manufacturing reasons, the orientation of the back cover may vary between individuals) ●Other features: Calendar (date and day of the week) function, koku count 24 koku, second hand stop function