10 Best Dive Computers 2025 in the United States

The Garmin Descent Mk3i is a high-end, versatile dive computer that doubles as a multisport GPS smartwatch. Its standout feature is a vibrant 1.4-inch AMOLED display, ensuring readability even in challenging underwater conditions. The device also boasts a robust build with a scratch-resistant sapphire lens and a titanium bezel, which adds to its durability and aesthetic appeal. With its comprehensive dive modes and 200-meter water resistance, it is suitable for both recreational and technical divers, including freedivers.

The air integration capability, when paired with the Descent T2 transceiver (sold separately), allows for monitoring tank pressures and exchanging messages between divers, enhancing safety and communication underwater. The built-in LED flashlight with variable intensities is particularly useful in low-light environments, providing both red and white light options. Additionally, the dive readiness tool is a thoughtful feature, offering insights into how lifestyle factors may impact diving performance. The inclusion of DiveView maps and multi-band GPS technology further enriches the diving experience by offering detailed dive site maps and precise navigation.

For fitness enthusiasts, the device supports various sports apps and provides extensive health monitoring, including heart rate and sleep tracking. On the downside, the device is relatively heavy at 105.6 grams, which might be noticeable on the wrist during extended use. Furthermore, certain advanced features require additional purchases, such as the Descent T2 transceiver for full air integration functionality. Connectivity options include Bluetooth and USB, ensuring compatibility with both Android and iOS devices. The battery life is powered by a lithium polymer battery, though the 150mAh capacity may require frequent charging, especially with intensive use. Despite these minor drawbacks, the Garmin Descent Mk3i offers a comprehensive package for divers seeking a reliable and feature-rich dive computer that also supports an active lifestyle.

The Shearwater Peregrine TX is a well-designed air-integrated dive computer that features a bright, full-color 2.2-inch LCD screen, making it easy to read underwater. It supports wireless air integration with the Shearwater Swift Transmitter, providing real-time gas pressure and accurate remaining dive time — a useful feature for safety-conscious divers. The inclusion of a tilt-compensated digital compass helps with underwater navigation without confusion.

Weighing just 125 grams, it is lightweight and compact, ensuring it won't feel bulky on your wrist. The battery life is solid, offering up to 30 hours of diving on a single wireless recharge, which is convenient and reduces downtime. Bluetooth connectivity to Shearwater Cloud allows divers to track and review their dives easily.

While the dive computer uses plastic for its casing, which might feel less durable compared to metal-bodied models, it offers strong core features. Some advanced technical divers might find it lacks the depth of customization or multi-gas support available in higher-end models. This dive computer is an excellent choice for recreational divers who want reliable air integration, a clear display, and easy access to dive data without complexity.

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.