I wouldn’t buy the apple watch until its water proof
No wrist watch under American regulations can claim "water proof" only degrees of "water resistance".
*Apple Watch is splash and water resistant but not waterproof. You can, for example, wear and use Apple Watch during exercise, in the rain, and while washing your hands, but submerging Apple Watch is not recommended. Apple Watch has a water resistance rating of IPX7 under IEC standard 60529. The leather bands are not water resistant.
There might be a company that will sell a protective case that makes it waterproof.