My recollection is that there is a (Rolex invented) WR test that relies entirely on humidity transfer to prove water resistance.
The test is intended to do so, using a whole watch with movement...
Type: Posts; User: sweets
My recollection is that there is a (Rolex invented) WR test that relies entirely on humidity transfer to prove water resistance.
The test is intended to do so, using a whole watch with movement...