How to Use a Dive Watch | ISO 6425 Basics, Bezels, Helium Valves, Maintenance

Learn how to use and care for a *dive watch* the right way. Tim Mosso explains ISO 6425 dive-watch standards, bezel use, helium escape valves, bracelet/clasp setup, and the maintenance that keeps your diver safe in the water — with examples from Breitling, Tudor, and Omega. This episode covers: ISO 6425 requirements, bezel technique, decompression scales, helium valves for saturation diving, yearly pressure testing, and everyday best practices to *avoid costly water damage.* Please Subscribe: https://www.youtube.com/@the1916company/?sub_confirmation=1 Buy Watches Here: https://www.the1916company.com View hands-on luxury watch reviews on The 1916 Company Watch Reviews: https://www.youtube.com/@the1916companywatchreviews/?sub_confirmation=1 Instagram: https://www.instagram.com/the1916company ⏱️ *Dive Watch Tutorial* 0:00 – Intro: what a “dive watch” really is 0:31 – ISO 6425 overview vs. general water-resistance (ISO 22810) 1:09 – Anti-magnetism, lume brightness & visibility requirements 1:48 – Salt-spray corrosion test (includes bracelet/clasp) 2:12 – Over-pressure, pusher/crown force, and low-pressure tests 2:39 – Timing devices: unidirectional bezel and displacement safety 3:07 – Which tests apply to every watch vs. homologation samples 3:41 – How to use the bezel: align, count-up timing, safety rationale 4:11 – Examples: Tudor Black Bay 58, Breitling Superocean, Omega Ploprof locks 4:41 – 60-click vs 120-click bezels: precision vs feel 5:03 – Decompression scales