Automatic mechanical movement, Calibre RW 1212 with 27 jewels. Frequency: 28800 vph (4Hz). Power reserve approximately 38 hours. Analog display features luminous hands and hour markers for enhanced legibility in low light conditions. Silver-tone stainless steel case and bracelet. Fixed silver-tone stainless steel bezel. Blue dial accented by silver-tone hour markers and indices. Minute markers are present on the outer rim of the dial. Sapphire crystal provides scratch resistance and clarity. Screw-down crown with safety release function and screw-in winding system enhances water resistance and security against accidental operation during diving or swimming activities up to 100 meters / 330 feet depth. Round case shape measures 42.5 mm in diameter and has a thickness of 10.6 mm. Watch includes a transparent sapphire crystal back for visibility into the movement, fold over clasp closure with integrated safety release mechanism ensures secure wearing during physical activities.