I was debating the idea about taking my Borealis diving. My horologist had suggested that we do a pressure test first. Glad we did. There was a tiny bubble at 99 feet (3 atm) simulated pressure. SO I borrowing my son’s Casio to dive (with a fresh battery) and will be fly fishing with the Borealis. When I get back I’ll get the seals replaced. It’s so nice to have a great horologist so close.