Fine and rare stainless steel electronic wristwatch with square button chronograph, 12-hour and 30-minute registers, tachometer, day, date and Omega Nato bracelet.
Three-body, polished and brushed, screw-down case back with embossed "Seamaster" logo, brushed case with rounded band and large square pushers, hooded lugs, polished bezel edge. Black mirrored with luminous steel indexes, subsidiary dials for the seconds, the 12-hour and the 30-minute registers, outer minutes and 1/5 second divisions, apertures for the days of the week and the date. Luminous "baton" hands. Cal. 1255, diapason tuning fork for swinging element, frequency of 300 Hz.
C. Three-body, polished and brushed, screw-down case back with embossed "Seamaster" logo, brushed case with rounded band and large square pushers, hooded lugs, polished bezel edge.
D. Black mirrored with luminous steel indexes, subsidiary dials for the seconds, the 12-hour and the 30-minute registers, outer minutes and 1/5 second divisions, apertures for the days of the week and the date. Luminous "baton" hands.
M. Cal. 1255, diapason tuning fork for swinging element, frequency of 300 Hz. Dim. 44 x 46 mm. Thickness 15 mm.