The indicator to the left of the 9 is a day/night indicator as the watch also has a GMT function - I have attached a picture with the second time zone hour hand showing as it’s normally behind the hour hand.
If you try it and it doesn’t work don’t pull the trigger - I waited 6 months for a bronze Brietling diver got the call, tried it on and it just didn’t work for me, so no sale .
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