A 21-jewel watch movement. The bezel is not original! The bezel does not rotate     The Mortima 17 jewels Super Datomatic Diver Dual Bezel Manual Wind French Rare Watch is a vintage timepiece from the 1970s with a unique logo dial and Arabic numeral indices. This round stainless steel watch features a left-handed design, making it a rare find for collectors. With a water resistance of 100 meters and a 33mm case size, this watch is suitable for diver and pilot/aviator styles, as well as casual and military wear. The dual bezel design and day/date feature add to the functionality and style of this classic timepiece.