Jezza really doesn't know about watches or their functions.
First he says look at the orange second hand, oops wrong.
Then he says the orange hand is the minute hand, oops wrong again.
Finally he says it's to be used in connection with the bezel for measuring/timing how long left when you're diving, oops wrong again.
The orange hand is a GMT hand and with the bezel you can set your watch to read/set the time in 3 different time zones.
He's buying it even though he doesn't know how it works, it's heavy and stunning that's all Jezza needs to know.