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Ref. No. 2225.80.00
Code 10362
Movement Automatic
Case Material Steel
Bracelet Material Steel
Condition 0 (unworn)
Gender Men's watch/Unisex
  New
Location United Kingdom, BLACKBURN
Caliber
Movement Automatic
Power Reserve (h) 44 h
Case
Case Material Steel
Waterproof 300 m
Dial Blue
Bracelet
Bracelet Material Steel
Bracelet Color Steel
Clasp Fold clasp
Functions
Chronograph, Date
Comments
The Seamaster 300 M Chrono Diver was the first commercial chronograph watch that could be used under water. It uses an Omega cal. 1164 movement, which is actually a Omega modified Valjoux 7750 movement. The self-winding Omega 1164 movement produces 28,800 vibrations per hour and has a 44 hour power reserve. The watch has a 300 m. water resistance rating, with the chronograph functions being functional underwater.
The Seamaster 300 M Chrono Diver is a typical chronograph except for the arrangement of the dial which has the sub-dials at the 6-9-12 position as opposed to the more traditional 3-6-9 positions. The main seconds hand is used for the chronograph function, continuous second being kept by sub-dial at the 9 o'clock position. The 30 minute timer and 12 hour time are found at the 12 o'clock and 6 o'clock positions, respectively. Date is displayed at the 3 o'clock position.
This watch is just 41.5 mm wide, but it is substantially thicker than most diver watches of the same size. You don't really have much of a choice of styles, the blue bezel and dial version pictured above being the only available choice.
Omega SEAMASTER CHRONO 300 M