I'm thinking this isn't exactly an apples to apples comparison (literally) because the Mares equipment is designed specifically for the purpose of diving. The d

I'm thinking this isn't exactly an apples to apples comparison (literally) because the Mares equipment is designed specifically for the purpose of diving. The design of that device can be optimized for diving, and just diving, where an Apple Watch needs to include features like phone calls, a speaker, a microphone, and other sensors that aren't necessary for diving, along with the other software and user installed apps. Furthermore, the physical size and case design of the products I see on the Mares website is bulkier, which likely makes it easy to build it to be more robust to physical damage and waterproofing.