Hopefully, this watch is water-resistant.
The definition of water resistant is something that will not be penetrated by liquid or destroyed by exposure to liquid but that will instead repel the liquid.
An example of a water resistant watch is one you can wear in the water while swimming without ruining it.
that repels water for a short time but is not thoroughly waterproof
Resistant to damage by water: a water-resistant watch; water-resistant wallboard.