Cal. 290 nickel-finished lever movement 24 jewels black dial baton and Arabic numerals with luminous accents luminous hands sweep centre seconds revolving inner black bezel calibrated for 60 units large circular water-resistant-type case screw back centred by the emblem of a diver holding a harpoon large button for inner revolving bezel and large winding crown at four oclock in the band case dial and movement signed