Is Apple Watch Ultra 2 Good for scuba diving?

The Apple Watch Ultra 2 is a premium smartwatch launched in September 2023, succeeding the original Ultra. It is designed for extreme sports and outdoor activities, with a rugged titanium case, a sapphire crystal display, and a precision dual-frequency GPS. Key features for diving include a built-in depth gauge (accurate to ±1 meter), a water temperature sensor, and a programmable Action button that can start a dive instantly. The watch is certified to EN13319, the European standard for dive computers, and works with the Oceanic+ app (subscription required for advanced features) to provide a full dive computer experience. It also supports dive logging, gas integration (single gas), and basic no-decompression limit calculations. Beyond diving, it offers all the functionality of an Apple Watch, including health monitoring, messaging, and apps.

Scuba diving involves breathing underwater using a scuba tank and regulator, allowing divers to explore depths typically up to 40 meters for recreational divers. Divers use a dive computer to track critical information: current depth, dive time, no-decompression limit (NDL), ascent rate, water temperature, and tank pressure (if connected via transmitter). Safety is the top priority, as exceeding limits can lead to decompression sickness. Divers need a device that is easy to read in low light, works with gloves, and has reliable battery life for multiple dives. Many divers prefer dedicated dive computers because they are purpose-built with large buttons, long battery life (years on coin cell), and robust algorithms. However, smartwatch-based dive computers are gaining popularity for their convenience and additional features like GPS and connectivity.

The Apple Watch Ultra 2 performs admirably as a recreational dive computer, especially for beginner and intermediate divers who want a single device for both everyday wear and diving. The depth gauge and temperature sensor are accurate, and the Oceanic+ app provides a clear, customizable dive display. The bright OLED screen is easy to read underwater, even in murky conditions, and the Action button allows for quick dive start. Battery life is sufficient for a day of multiple dives (roughly 8 hours of dive time with the always-on display off), but it falls short of dedicated dive computers that can last weeks. A significant limitation is the lack of support for multiple gas mixes (nitrox, trimix) and advanced features like gas switching, which tech divers require. Additionally, the watch is not designed for extreme depths; its rated depth of 100m is for water resistance, but the dive computer is certified only to 40m. User reviews on sites like ScubaBoard are mixed: many recreational divers appreciate the convenience and smartphone integration, while experienced divers caution that it is not a replacement for a dedicated computer for serious diving. The touchscreen can be finicky with neoprene gloves, though the Digital Crown and Action button help. For those who dive frequently in remote locations, the reliance on a charger (versus user-replaceable batteries) is a drawback. Nevertheless, for the casual diver who wants a capable smartwatch that also serves as a backup dive computer, the Ultra 2 is a solid choice.