My question....can you screw down the pushpieces while the chronograph on the Breitling Chronomat Evolution is operating? Such to the extent that lets say I am timing a plane ride or a trip. I unscrew the pushers and push the starter and the Chronograph runs...now can I screw it back down and still have the Chronograph operate?

However, I thought I read in another thread way back, and I can't find it but you can't operate the pushpieces without unscrewing right?

thanks
nick

So is it okay to leave them unscrewed all of the time? It would be quicker (and therefore more useful) to operate the chronograph if they didn't always have to be unscrewed.

Really appreciate the response Roffensian - that's a great help.

Can I take it then that the Chrono Evo is still waterproof with the screwdowns unscrewed but best to screw them down as underwater operation would be bad (presumably push water into the case)?

The ideal for me would be to leave them unscrewed for the most part - for quick use - but screw the pushers down if swimming or going on holiday.

Maybe one for Admin's proposed FAQ?

Shall we summarise again?

Oh alright then as you asked so nicely

The job of the screwdown on the pushers is to prevent the operation of the pushers. This is done because the operation of the pushers while underwater compromises the water resistance of the watch.

In order to preseve the integrity of the water resistance rating it is only necessary to avoid operating the pushers underwater. It is best practice to screw down the pushers before going under water as that will prevent accidental operation of the pushers.

It makes no difference to the water integrity whether the chronograph is operational or not as long as the pushers were not depressed underwater.