How do you determine how waterproof a watch is?

[jmelhuish]

HI, I have a Seiko divers watch that says its watproof to 300m I have taken it to 50m with no problems. I have just brought a watch that is waterproof to 5ATM so 40m (1ATM = Atmosphere and 1 Atmosphere per 10 m of water). Does this mean that this watch can be taken to this depth without problem? Can anyone answer this?

Edited by jmelhuish on Sunday 4th May 10:19

[tertius]

jmelhuish said:

HI, I have a Seiko divers watch that says its watproof to 300m I have taken it to 50m with no problems. I have just brought a watch that is waterproof to 5ATM so 40m (1ATM = Atmosphere and 1 Atmosphere per 10 m of water). Does this mean that this watch can be taken to this depth without problem? Can anyone answer this?

Edited by jmelhuish on Sunday 4th May 10:19

Here's a useful link:

http://www.zeno-watch.ch/en/ServiceOverview/WaterR...

My personal take on this is: "not as deep as it says" and if it isn't marked to at least 100m I won't swim in it.

[Asterix]

Here's a test - with some great translation of a Rolex Sea Dweller at 1,200 metres on the arm of a ROV Submersible.

http://www.minus4plus6.com/pdf/SeaDwellerTestFR.pd...

[Don1]

Have a look at the pictures of the JLC Master Compressor...



From here: http://www.horomundi.com/forum/showthread.php?t=16...

[Fittster]

If you really want waterproof you need an MTM Seal.

WATER PROOF!! : 39,600 Feet,
12,000 Meters, 6,600 Fathoms, Or 2.5 Leagues.

http://www.specialopswatches.co.uk/p/583/Seals/MTM-XTREME-Ops-Navy-Seal-Watch-Black-Seal.htm