10 Best Altimeters 2025 in the United States

The Garmin GPSMAP 65s stands out with its large 2.6-inch color display that's easy to read in sunlight, making navigation straightforward in various lighting conditions. Its expanded GNSS and multi-band technology ensure high accuracy even in difficult terrains like dense forests, steep areas, or urban canyons. This is a significant advantage for users who find themselves in challenging environments where lesser devices might struggle with signal reception.

The integration of a 3-axis compass and barometric altimeter adds to its reliability for precise altitude and direction tracking. While the device supports both barometric and GPS altimetry, the combination of both ensures better accuracy in versatile situations. The device's durability is supported by its rugged design, suitable for outdoor activities like hunting, hiking, and camping. It comes with a carabiner clip for easy portability.

The Garmin GPSMAP 65s requires 2 AA batteries (included), which can be a double-edged sword — while it ensures that you can carry extra batteries for extended trips, it might also mean frequent battery changes depending on usage. The device pairs with the Garmin Explore app, allowing for route planning and data review, which is a valuable feature for serious adventurers. Some users might find the button-operated interface less modern compared to touchscreen alternatives, but it can be more reliable in wet or gloved conditions. The unit is quite lightweight at 7.7 ounces and has relatively compact dimensions, making it convenient to carry. With features like preloaded Topo maps and public land boundaries, it offers a robust tool for navigation.

The Casio Men's Pro Trek PRW-3500T-7CR is a feature-packed altimeter suitable for outdoor enthusiasts. Its solar-powered functionality ensures a reliable power source, reducing the need for frequent battery changes. The accuracy of the altimeter is notable, with a measuring range from -700 to 10,000 meters, making it versatile for various altitudes. The watch employs barometric pressure for altitude measurement, which is generally reliable but can be affected by weather changes. Unlike GPS-based altimeters, it may require frequent calibration for optimal accuracy.

The device also includes a barometer, thermometer, and digital compass, which are valuable for comprehensive outdoor navigation and weather monitoring. The battery life is enhanced by its solar power and power-saving functions, reducing concerns about running out of charge during extended outdoor activities. Durability is a strong point with a 56 mm resin case and mineral dial window, combined with a titanium band and a water resistance of up to 200 meters, making it robust for harsh conditions. However, the watch's bulkiness at nearly 6 ounces might be cumbersome for some users.

The ease of use is supported by a clear digital display with a backlight, but the multitude of features might require a learning curve for those not familiar with advanced sport watches. Additional features such as atomic timekeeping, multiple alarms, and sunrise/sunset data offer convenience and enhance its functionality. While it lacks the pinpoint location accuracy of GPS-based models, the Casio Pro Trek PRW-3500T-7CR remains a solid choice for those seeking a durable and feature-rich altimeter for outdoor activities.

The Casio Men's GW-9400-1CR 'Master of G' Stainless Steel Solar Watch is a robust timepiece tailored for enthusiasts of exercise and fitness, featuring a durable resin material and a sizable 53mm case diameter. Its barometric altimeter provides dependable accuracy, which is essential for tracking altitude during outdoor activities. The watch is solar-powered, offering extended battery life without the need for frequent recharging, a notable advantage for long outdoor excursions.

The sterling silver and resin construction ensures durability, while the buckle clasp adds security during vigorous activities. Despite its rugged build, the watch can be slightly bulky due to its size, which may not be comfortable for everyone. The ease of use is enhanced by intuitive controls and a clear display, making it user-friendly even for those not particularly tech-savvy.

Additional features, such as water resistance and a variety of sensors, add to its versatility and appeal. However, the watch does not come with GPS functionality, which might be a drawback for users who require precise navigation capabilities. The Casio GW-9400-1CR is well-suited for those seeking a durable, reliable altimeter watch with long battery life and essential features, although its lack of GPS might be a limitation for more navigation-intensive activities.