Why does my watch get condensation inside it?

Okay the last 3 watches I've had have got condensation inside them and it goes without saying that it's really annoying. I had a 拢35 Timex watch (which was waterproof to 50 meters) which was fine for about a year and then started to get condensation in it. I then bought a Lorus watch for 拢35 from "Watchshop" (which was also waterproof to 50 meters), and not long after that It began to get condensation behind the glass. I put it down to it just being coincidental. Anyway I sent it back and purchased a slightly more expensive Festina watch (which AGAIN, is water resistant to 50 meters) for 拢60. Yep you've guessed it it now has got condensation inside it. Now, I am not a deep sea diver! I take my watch off when in the shower etc the only time it may get a little bit wet is when I was my hands... Now, correct me if i am wrong but if a watch states that it is water resistant to 50 meters and is swim-proof I should be able to wash my hands whilst wearing my watch in confidence, surely!? Now, my question is "What is it I am doing to cause this to happen?" or is it just that I've been very unlucky??? You could argue that I spend more dosh on a better watch, but its the principal; If it was Water Resistant to 50 meters then in theory, surely I should be able to submerge my watch 49.9 meters underwater and it should tick tickity-boo and not have any issues with condensation.



And also how come I've only had this condensation with my recent watches... its VERY ANNOYING



Any advice is greatly appreciated.



P.S. don't tell me to dry it out on a radiator (or similar) because the condensation just comes back within half a day. I WANT A PREVENTATIVE RATHER THAN A TEMPERARY CURE - THATS NO USE TO ANYONE. A WATCH SHOULD WORK PROPERLY.



P.S. I had the tTimex's seal tested countless times buy USELESS Timpson's and they said the seal on it was fine and as for the Lorus and Festina watches (my most recent) I've had them a matter of weeks before this condensation issue started occuring... It's almost as if they are factory seconds, but how can that be if i bought them both of Watchshop: http://www.watchshop.com/Why does my watch get condensation inside it?
Your watch can only get water inside of it by three methods; the back seal, the crystal seal or the stem seal. Normally the stem seal is the culprit if the crystal is not broken. If the back has ever been removed the seal can easily be damaged or lost. Remember, water resistant and waterproof are two different things. Normal wear will usually not cause a quality watch to leak water. The water inside the watch can be removed by removing the back and allowing it to evaporate in a dry environment. However, the moisture will likely return if the leaky seal is not replaced.Why does my watch get condensation inside it?
O J Parker has it right but I would guess you are somehow putting hairline cracks in the crystal. Depending on what you do maybe your wrist is hitting something quite regularly and you are not even aware of it. Before buying another watch take one into a watch repair shop and have them find out which seal is leaking and why or if the crystal is cracked. Good LuckWhy does my watch get condensation inside it?
Take the watch off when you wash your hands.

Water RESISTANT means just that.

Keep exposing them to water and there will be seepage/ condensation inside the case.