7 Answers

Not long at all, under a minute.

As long as it takes for the foul odour to subside.

....just tried it, whew ! 

....only 40 seconds

....in my days as a lifeguard 90 seconds 

....I know, getting old

As long as it takes till i need another breath of air..>>>>>>>><<<<<<<<..

One minute and fifteen seconds. Getting old and I wasn't under water necessitating longer.

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Brand HublotModel Big Bang link Integral CeramicReference Numbers 451.GX.5220.GX green 451.EX.5210.EX link dark blue 451.CZ.4620.CZ beige 451.EX.5129.EX light blue Diameter 42mmThickness 13.45mmCase Material CeramicDial Color VariedIndexes AppliedLume YesWater link Resistance 100 meters StrapBracelet Integrated and color-matched ceramic bracelet