Very good product, the altimeter is a little weird as is the depth meter, but it is most likely I am just setting them up improperly. I am a Navy Corpsman and this watch has been deep underwater and in field situations and in a clinical setting and held up very well, I recommend this product, is it perfect? no, but I do recommend it.

UPDATE
Went diving one day and for no apparent reason it leaked and the watch was ruined.