A great workout watch does more than count laps or track heart rate. The best ones let a swimmer see a key message between sets, help a runner reply without reaching for a phone, and survive sweat, rain, pool water, and daily knocks. That mix is harder to get right than it sounds. A watch can be waterproof but weak at messaging. Another can be excellent for texts but barely last through a long training day. The sweet spot is a smartwatch with strong water resistance, dependab