SEIKO 5 Sports Automatic Mechanical Watch Made in Japan SNZB23J1 Men's Silver

[Size and Weight] Case size (height x width x thickness): 45.0 x 41.5 (including crown guard) x 12.3 (approx. mm), Bezel diameter: approx. 38.7 mm, Strap: width approx. 18 (buckle side) - 21 (case side) mm, Lug width approx. 20 mm, Wrist circumference (maximum): approx. 205 mm, Weight: approx. 132 g [Materials] Case: Stainless steel, Band: Stainless steel, Crystal: Hardlex crystal [Caliber No.] 7S36 (Automatic winding, no manual winding function, no hacking function, with calendar (date and day of the week) function, 23 jewels) [Waterproof Performance] Enhanced water resistance for daily use (10 ATM) [Accessories] Japanese instruction manual (copy), presentation box (A SEIKO presentation box is included, but the design may vary depending on the shipment.) [Band size adjustment method] Leaf spring type (separate tool required) [Main Specifications] ● Caliber No.: 7S36 ● Movement: Mechanical automatic winding (no manual winding, no hacking function, with date and day of the week display, 23 jewels) ● Accuracy: +45 to -35 seconds per day ● Power reserve: Approximately 40 hours when fully wound (the rotor reaches maximum winding state after approximately 1,000 rotations) ● Case material: Stainless steel ● Glass material: Hardlex crystal ● Band material: Stainless steel ● Water resistance: Enhanced water resistance for daily use (10 ATM) ● Unidirectional rotating bezel ● See-through screw-down case back