10 Best Solar Powered Watches 2025 in the United States

The Garmin tactix® 8 is a high-end solar-powered tactical GPS smartwatch featuring a bright 1.4-inch solar charged display that significantly extends battery life. Thanks to its solar charging capability, it can last up to 48 days in smartwatch mode and 149 hours in GPS mode under ideal sunlight conditions, making it well-suited for long outdoor missions without frequent recharging. Built with a titanium bezel and sapphire lens, this watch offers strong durability and a water resistance rating up to 40 meters, allowing confident use while swimming or diving. Its rugged tactical design and lightweight 95 grams casing ensure comfort for extended wear.

Beyond solar power and durability, the watch includes specialized tactical features such as jumpmaster activity, waypoint projection, stealth mode, and compatibility with night vision goggles, appealing to military personnel and outdoor enthusiasts. It supports a wide range of sports and health tracking functions including heart rate, sleep, respiration, and pulse oxygen levels. Navigation capabilities are enhanced with multi-band GPS and sensors like a compass and barometric altimeter, complemented by preloaded topo maps and aviation tools for pilots. The large 32 GB storage enables ample downloadable maps and apps.

To maximize solar charging benefits, several hours outdoors in bright light daily are necessary, which may limit battery gains indoors. The advanced tactical features and health tracking may be complex for users unfamiliar with such technology or those not requiring specialized tools. This smartwatch is designed for serious outdoor users, tactical operators, and athletes seeking long battery life combined with comprehensive navigation and fitness tracking, while casual users might find it more feature-rich than necessary.

The Garmin Instinct 3 Tactical Edition is a strong choice for those seeking a rugged solar-powered watch, especially outdoor enthusiasts and tactical users. Its solar charging feature is impressive, offering unlimited battery life in smartwatch mode with just a few hours of daily sunlight, which reduces the worry about running out of power during extended outdoor activities. The watch is built tough, with a fiber-reinforced polymer case and metal bezel, designed to handle shocks and harsh conditions, meeting military standards for durability. Its 10 ATM water resistance means it can withstand swimming and water exposure comfortably. Design-wise, the 50 mm size is quite large, which suits active users but may feel bulky for everyday wear or smaller wrists. The black tactical look is functional but not meant for formal occasions.

Beyond durability and power, it packs useful tactical features like jumpmaster mode, stealth settings, waypoint projection, and compatibility with night vision goggles, making it a specialized tool for military or extreme adventure users. It also includes health monitoring like heart rate and sleep tracking, though it's not a medical device, so accuracy might vary. Navigation is reliable with multi-band GPS and a built-in compass. Some handy extras include a built-in flashlight and Garmin Pay for contactless payments, adding convenience without extra gear.

The watch operates with physical buttons rather than a touchscreen, which might take some getting used to if you prefer more modern interfaces. This device excels as a durable, feature-rich solar smartwatch for tactical and outdoor use but may feel oversized and specialized for casual users.

The Garmin Instinct 3 is a rugged outdoor GPS smartwatch designed for active users who want a durable, reliable solar-powered watch. Its solar charging lens supports unlimited battery life under ideal conditions (about 3 hours daily in strong sunlight), which is impressive for extended outdoor use, though real-life results vary based on exposure. The watch has a tough 45mm fiber-reinforced polymer case with a metal bezel, built to military standards for shock and thermal resistance, and it is water-rated to 10 ATM, making it suitable for swimming and most water activities. The 0.9-inch round display is compact but clear, prioritizing function over flashy style.

Beyond basic timekeeping, it offers a range of health monitoring tools such as heart rate, sleep tracking, and Pulse Ox (not medical-grade), which are helpful for fitness enthusiasts. Navigation features include multi-band GPS with SatIQ technology plus a 3-axis compass and barometric altimeter, ensuring reliable positioning in challenging environments. The built-in LED flashlight is a thoughtful addition for outdoor visibility. Additional conveniences like Garmin Pay for contactless payments and smartphone notifications add to its versatility.

The relatively small screen and weight might not appeal to those seeking a more stylish or larger display watch. While the solar charging extends battery life, it still requires exposure to strong light to maintain that, so users mainly indoors might not benefit fully. This watch is ideally suited for outdoor adventurers needing ruggedness, solid GPS, and health tracking with solar charging as a helpful boost rather than the sole power source.