“SUBPRO-MARINE" is a reproduction of the prototype Submariner that ROLEX is said to have once ... “SUBPRO-MARINE" is a reproduction of the prototype Submariner that ROLEX is said to have once delivered to the Royal Navy.The dragon head, which used to be at the 3 o'clock position, has been moved to the 4 o'clock position so that it does not interfere with the movement of the wrist,It is equipped with a unidirectional rotating bezel.Movement Automatic self-winding movement manufactured by ETA, 25 jewels, 28800 beats per minuteCalendar with quick-change functionCase SUS316 SOLID caseDial Classic mud blackAntimagnetic function 80000 A/m = 1000 gaussBezel Click type unidirectional rotating bezelBracelet Hard type W-lock & extension braceletMovement Equipped with shock absorberCase size approx. 40 mm (excluding crown protector)Water resistance 200m (Quattro-lock system)Luminescence N luminescence (Super-LumiNova) used parts, dial & hands(Specifications when new)I think this is a rare model that does not come around very often.I bought this watch a long time ago but have”