10 Best Dive Computers 2025 in the United States

The Wearable4U Garmin Descent Mk3i is a high-end dive computer that is designed for serious diving enthusiasts. One of its major strengths is the impressive AMOLED display, offering a clear and vibrant view, which is vital underwater. The device also boasts a robust titanium build with a scratch-resistant sapphire lens, making it durable and suitable for various diving conditions. Another notable feature is its advanced SubWave sonar technology, which allows for diver-to-diver communication and monitoring of tank pressures and depth for up to eight divers, enhancing safety and coordination during group dives.

Additionally, the inclusion of a built-in LED flashlight with adjustable intensities is a practical feature for low-light conditions underwater. The GPS functionality and DiveView maps, although not functional underwater, provide excellent support for surface navigation and planning. Moreover, the dive log storage for 200 dives and compatibility with the Garmin Dive app for data sharing is useful for meticulous tracking and review of dive activities.

On the downside, the device's size might not be suitable for larger wrists as it is catered to smaller wrists with its 43 mm bezel. Also, the battery life, although up to 25 days in smartwatch mode, lasts 30 hours in dive mode, which might require frequent charging for extended diving trips. Nonetheless, the Descent Mk3i is a feature-rich dive computer that blends advanced technology with practical diving needs, making it a strong contender for dedicated divers.

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 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.