Automatic movement, Caliber 7S26 (derived from Seiko 7002). Power reserve approx. 40 hours. Water resistant to 50 meters / 165 feet. Sapphire crystal with anti-reflective coating and scratch resistance. Hardlex crystal type is a proprietary Seiko name for synthetic ruby material. Fixed bezel in silver-tone stainless steel, screw-down design (not mentioned but typical). Black dial featuring luminous elements on hands and markers due to Super-LumiBrite technology. Silver-tone dauphine-style hour and minute hands with luminous coating for night readability. Index hour markers at outer ring and possibly inner indexes. Day of the week day display at 3 o'clock position, date function also visible there. Round case diameter 36 mm. Case thickness measures approximately 12 mm. Silver-tone stainless steel bracelet band is 19 mm wide with a deployment clasp equipped push-button release mechanism. Analog display type. Includes second subdial or sweep seconds hand (not specified; description implies analog). Movement frequency: 21600 vph, which equates to approximately 25,200 bph.
