If you are selecting a timepiece to swim or dive with, you should not expect that any water resistant timepiece is good for this purpose. You should know that, some waterproof wristwatches can be used for swimming, while other watches not. With a waterproof timepiece on your wrist you must not be afraid of being caught in the rain, however, you should remove such a watch before taking a shower, because very few timepieces are really water resistant. It is essential to read all markings on the wristwatch thoroughly and to understand what they mean. Never swim or dive with a wristwatch that features the marking "water resistant" 3 ATM (30 m)". There are watches with higher water resistance - to 50m, you must remove such a wristwatch if you plan to dive, but such a wristwatch will withstand swimming. The best timepieces are those with water resistance to 10ATM (100 m), these are appropriate for diving. Many people guess that replica wristwatches are highly waterproof, but this is not true. If you are going to buy a watch for diving, you ought to select an authentic timepiece, for example a Rolex wristwatch, but not a Rolex Graphite Cosmograph reproduction wristwatch. Though an imitation Rolex wristwatch amazes by its similarity to the genuine watch model, it is not absolutely the same as a genuine Rolex watch. You should understand that you will not be able to turn your wristwatch for refund for refund, if the timepiece was damaged by water, no matter if it is an original timepiece or if it is from a catalogue of replica wristwatches.