Yesterday I ended up going with my dog and some friends to the beach. I disconnected my watch with 100% charge at 11AM and went on my way. I arrived at the beach around 12:30PM and then played with my dog for a bit and eventually jumped into the ocean. I swam around for a bit, jumped over some waves, etc etc. Came back to the beach and laid in the sand, ate some grub on the boardwalk and then headed home. When I got home around 6PM, I had 81% battery life remaining after some occasional use throughout the trip, mostly notifications that I didn't respond to.
As for the sand/salt water, the watch held up well, but I wouldn't do it again. No scratches or anything, but you could tell either the water or sand would've had its way with it if left exposed to them long enough. When I inspected the watch further this morning, I saw some bits of sand in the edge of the screen as well as the speaker hole. I gave it a light wash in the kitchen sink and all was well.
Just my $0.02, leave it in the car or in a bag with you at the beach. For a $400 device, I think the risk outweighs the benefits.
As for the sand/salt water, the watch held up well, but I wouldn't do it again. No scratches or anything, but you could tell either the water or sand would've had its way with it if left exposed to them long enough. When I inspected the watch further this morning, I saw some bits of sand in the edge of the screen as well as the speaker hole. I gave it a light wash in the kitchen sink and all was well.
Just my $0.02, leave it in the car or in a bag with you at the beach. For a $400 device, I think the risk outweighs the benefits.