10 Best Dive Computers 2025 in the United States

The Garmin Descent Mk3i is a premium dive computer designed like a smartwatch, featuring a sharp 1.4-inch AMOLED display protected by a scratch-resistant sapphire lens. Its titanium case is durable and rated for dives up to 200 meters, making it suitable for both recreational and technical diving as well as freediving. One standout feature is its advanced air integration, which allows monitoring of tank pressures for up to eight divers when paired with Garmin's Descent T2 transceiver, helping divers keep track of their air supply easily. Communication between divers using SubWave sonar technology is also a useful addition, offering preset messages underwater.

The watch has a sturdy build with metal leakproof buttons and offers several dive modes. Size-wise, it’s fairly compact and lightweight (just under 6 ounces), so it’s comfortable to wear both in and out of the water. Connectivity options include Bluetooth and USB, allowing easy syncing with Garmin's Dive app to review and share dive logs for up to 200 dives. Multi-band GPS provides accurate positioning on the surface, and the built-in ABC sensors (altimeter, barometer, compass) assist in navigation, although GPS doesn’t work underwater.

Additional features like a built-in flashlight with variable brightness, dive readiness insights based on your health data, and health monitoring (heart rate, sleep, respiration, Pulse Ox) make this device versatile for everyday use beyond diving. Pulse Ox functionality isn’t available everywhere, and the dive readiness metrics are close estimates rather than medical-grade data. This dive computer is well-suited for serious divers who want a robust, feature-rich device that doubles as a multisport smartwatch, though it might be less ideal for those seeking a simpler or more budget-friendly option.

The Shearwater Peregrine TX is an excellent choice for divers seeking a reliable and feature-rich dive computer. Its standout feature is the large, full-color 2.2-inch LCD display, which makes it easy to read underwater, even in varying lighting conditions. With the option for wireless air integration, it provides real-time gas pressure data, enabling divers to manage their air supply effectively and make informed decisions during their dives. The included tilt-compensated digital compass is a great asset for navigation, ensuring divers stay oriented throughout their underwater explorations.

One of the highlights of the Peregrine TX is its rechargeable battery, which lasts up to 30 hours, allowing for extended diving without the hassle of changing batteries. Additionally, the Bluetooth connectivity to Shearwater Cloud enhances the user experience by allowing divers to track and analyze their dive logs conveniently.

There are a few drawbacks to consider. The weight of 16 ounces may feel a bit heavy for some users, especially if they prefer lightweight gear. The plastic material, while durable, might not appeal to those looking for a high-end, premium feel in their equipment. Also, the price point could be a consideration for casual divers, as it may be on the higher side compared to more basic models. The Shearwater Peregrine TX stands out as particularly suitable for serious divers or those who frequently dive in varying conditions, thanks to its comprehensive features and user-friendly design. Casual divers may find it more advanced than their needs require, but its capabilities certainly justify its standing in the digital diving gauge category.

The Garmin Descent Mk3 is a sleek, watch-style dive computer designed especially for smaller wrists, featuring a bright 1.2-inch AMOLED display protected by a scratch-resistant sapphire lens. It’s built tough with a 43mm stainless steel case, and rated for dives up to 200 meters, making it suitable for both recreational and technical scuba diving as well as freediving. The dive modes cover a wide range of needs, and the device includes metal leakproof buttons for reliable underwater use. While it doesn't have traditional air integration displayed explicitly, its advanced dive algorithm and built-in sensors, including an underwater compass and ABC (altitude, barometer, compass) features, help divers navigate effectively.

The battery life supports up to 30 hours in dive mode, which is ample for most diving sessions, plus up to 10 days in smartwatch mode for everyday use. It also offers strong connectivity options like Bluetooth and USB, syncing dive logs to the Garmin Dive app for easy review and sharing. Additional features include multi-band GPS for accurate surface positioning, health monitoring tools like heart rate and sleep tracking, and smart functions such as music storage and contactless payments, enhancing its use beyond diving.

GPS doesn’t work underwater, which is typical but worth noting if you expect underwater positioning. Also, the dive readiness tool offers estimations that should not replace professional advice. Weighing just 2.56 ounces, it is comfortable to wear all day. This dive computer suits divers seeking a versatile, high-quality device that combines serious dive functionality with everyday smartwatch features.