Some people just don’t like going through the hassle of charging their smartwatches daily. Coming home and charging your smartwatches, again and again, every day can be tiresome and mundane. But living without a smartwatch seems impossible as it comes with so many features. Won’t it be nice if your smartwatch could charge itself while you are outside? A lot of users don’t know this but solar-powered smartwatches are a good solution to this problem.
The watches I’ve mentioned in this list are some of the best solar-powered smartwatches in 2025. With these watches, you won’t have to worry about charging and you can fully indulge in any activity. You can go on your adventure without needing to carry a power bank or worrying about charging your watch daily.
Quick Navigation
- Top Picks
- Check Our Video On Best Solar Smartwatch
- 7 Best Solar Powered Smartwatches
- Things to Keep In Mind While Selecting A Solar Smartwatch
- FAQs
Top Picks
IMAGE | PRODUCT | SPECIFICATIONS | VIEW ON AMAZON |
Best Solar Powered Garmin Smartwatch  | Garmin Fenix 8 Solar |
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Best Overall Solar Smartwatch  | Suunto Vertical Solar |
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Best Cheapest Solar Powered Casio Smartwatch  | Casio Pro Trek PRG-340 |
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Check Our Video On Best Solar Smartwatch
7 Best Solar Smartwatches
1. Garmin Fenix 8 Solar
First up, we have a solar-powered Garmin smartwatch, the Garmin Fenix 8 Solar. It’s the top-of-the-line solar smartwatch variant by Garmin. Needless to say, this smartwatch has impressive battery life, it lasts for about 21 days on a single charge in smartwatch mode, and that’s without the solar charging.
With solar charging, I was able to extend the battery life by about a week. And if you turn on the battery saver, then the Fenix 8 Solar can last for about 58 days on a single charge. So, if you like to go on long camping or hiking trips, then the Fenix 8 Solar is the watch for you. The watch has a 1.3 inch touchscreen display along with physical buttons, making it easier to use the watch even when your hands are wet or when you’re wearing gloves.
It has a multi-band GPS, which allows it to track outdoor workouts with remarkable accuracy. It is one of the few smartwatches that come with Topo Maps. Combining that with the ABC sensors present on this watch and you can trek anywhere in the world. It also has a heart rate monitor and blood oxygen sensor along with other advanced health tracking features like body battery energy monitor, sleep coach, jet lag advisor, and ECG.
With its Bluetooth connectivity, the Fenix 8 is one of the Garmin that let’s you make and answer phone calls directly from your wrist. You can even connect to wireless headphones or Bluetooth helmets and enjoy your favorite music on the go.
In short, the Garmin Fenix 8 Solar isn’t just a smartwatch, it’s a rugged companion built for explorers who refuse to compromise on performance, accuracy, or endurance. Whether you’re summiting peaks, navigating trails, or just living off the grid for weeks at a time, this watch ensures you’re always powered, always connected, and always prepared. If adventure is your lifestyle, the Fenix 8 Solar is your ultimate wrist-mate.
2. Suunto Vertical Solar
Next smartwatch with solar charging on the list is the Suunto Vertical Solar. This one is also a beast for your outdoor adventures, thanks to its solid build. Suunto Vertical Solar smartwatch is available in 2 build options, steel and titanium making it one of the best durable watches out there.
It has a large 1.4mm MIP display with sapphire crystal glass protection. As for the battery life, it can last for about 30 days on a full charge, and that’s with 24/7 tracking and smart notifications on. In the basic watch mode, it’ll last you for up to 60 days.
It also comes with a Dual Band GPS, which allows the watch to track outdoor activities with precision. You can access more than 95 sports and activity tracking profiles. However, the highlighting feature of this smartwatch is definitely its free-of-cost offline map support with contour lines, water sources, paths, and important landmarks.
It’s quite convenient that you can access all the tracking features along with the maps in offline mode, pair it with the ABC sensors present on this watch & you have one of the best smartwatches for hiking.
But being an outdoor adventure smartwatch has its limitations, most notably the limited health tracking and smart features on this one. It can track your heart rate, calorie burn, sleep with sleep stages, HRV monitoring, along with stress and recovery status. As for the smart features, you can receive notifications from your phone, you can reply to incoming text messages, receive weather updates, and control media playback.
While the Suunto Vertical Solar may not have many smart features, it’s definitely one of the best Suunto Watches that comes with free offline maps support, durable build quality, and long-lasting battery life.
3. Garmin Instinct 3 Solar
Next up, we have the Garmin Instinct 3 Solar, which is the latest offering in the Instinct lineup. This solar powered Garmin is made specifically for using in outdoor or survival conditions so you can bet that it has a solid build and an incredible battery life. The Garmin Instinct 3 offers an MIP display for the solar variant but it also has an AMOLED display variant without the solar charging.
The Instinct 3 is mostly made out of fiber-reinforced polymer with aluminum to keep the watch on the lighter side and it is also water resistant for up to 100 meters. It’s one of the best rugged smartwatch for outdoor use, so you can carry on with your adventures without worrying about damaging it.
It even has a built in led torch which is extremely bright, it can easily illuminate the area around so you can figure out your way in the dark. As for the battery life, the Garmin Instinct 3 can last for up to 28 days on a full charge with normal usage. But with decent solar exposure of about 50,000 lux for 3 hours a day, you can get unlimited battery life with this smartwatch making it perfect for hikers and campers.
Besides this, the Instinct 3 Solar comes with a multi-band GPS that ensures accurate positioning for all your outdoor activities like running, cycling, hiking etc. And since it’s a Garmin, you can expect some really advanced activity tracking metrics like HR max, recovery status, respiration rate, interval training, Vo2 max, training load, training effect, virtual partner and many more.
Furthermore, this Garmin smartwatch comes with a heart Rate Monitor, SpO2 Monitor, ABC sensors, thermometer, and many more. However, the Garmin Instinct 3 Solar lacks the map function which is weird since it’s meant for outdoor adventure.
This solar smartwatch connects to your smartphone via Bluetooth enabling some smart features like incoming calls alerts, smart notifications, replying to incoming texts, weather forecast, find my phone, camera remote and many more. Since Garmin Watches are compatible with iPhone & Android, it is widely accessible to a large audience.
4. G-Shock Move GBD-H2000
Fourth watch on our list, is the Casio G-Shock Move GBD-H2000. Do not let its look fool you, because this is a full-fledged activity-tracking sports smartwatch with loads and loads of features.
This G-Shock Move GBD-H2000 is a solar-powered smartwatch. That means that you won’t have to worry about recharging it as it can be recharged under both solar light and indoor lights. It needs about 8 hours of indoor light a day or just 2 hours of sunlight a week, and that is enough to keep it running.
Being a G-Shock means that it is pretty much assumed that this watch is shock-resistant, which it is. This watch also features a water resistance of 200 meters, which is insanely impressive considering this is a smartwatch. These specs easily make it the best rugged solar watch.
Apart from the basic functions, this watch features GPS and Bluetooth connectivity along with heart rate monitoring. If you are someone like me who is adventurous and likes to go hiking, camping or just traveling in general, then this watch can be a great companion for your journeys.
Aside from the basic stuff, the G-Shock Move GBD-H2000 smartwatch has an optical heart rate sensor, accelerometer, gyroscope, pressure sensor, magnetic sensor, and thermo sensor. These 6 sensors along with the GPS on this watch ensure real-time activity and health tracking. You can get accurate data regarding your heart rate, distance covered, speed, time, calories burned, and more.
You can measure 8 different activities using this watch like swimming, running, biking, gym workouts, and more. Not only that, the G-Shock GBD-H2000 also provides great sleep tracking and blood oxygen level measurements. Overall, the G-Shock GBD H2000 is one of the best solar G-Shock smartwatch with Bluetooth connectivity.
5. Garmin Instinct 2 Solar
Another Garmin on the list is the Instinct 2 Solar, which is the predecessor of the Garmin Instinct 3. Most of the features are same as that of the Instinct 3 with a few key differences. Like for starters, it comes with a single band GPS which although has precise positioning, it’s not as fast and accurate as the dual band GPS of the Instinct 3. It also lacks the dedicated led flashlight feature. But besides these things, the rest of the experience is quite similar in both watches.
The Instinct 2 also has great battery life, lasting for about 28 days in smartwatch mode and just like with the Instinct 3, the Instinct 2 also has unlimited battery life with daily solar charging.
Like Instinct Solar 3, this smartwatch comes with a host of features that include: In built sports modes, 24/7 heart rate monitoring, advanced health tracking with VO2 max and sleep tracking with sleep stages.
Overall, if you are looking for a rugged solar charging smartwatch that you can take anywhere and also do not want to spend big then you should consider Garmin Instinct 2 Solar. It is one of the best rugged smartwatches for outdoor use.
6. Casio G-Shock Rangeman GPRH1000
Another G-Shock on this list is from the Rangeman series, the GPRH 1000. This solar-powered G-Shock is specifically designed for extreme outdoor environments and survival scenarios, so naturally it’s very durable. It’s made out of a bio resin material, which makes this watch shockproof and mudproof. With a 200-meter water-resistant rating, you can even wear this smartwatch for diving and other deep-water related activities.
Being a solar smartwatch by Casio, the Rangeman GPRH1000 has an incredible battery life. On a full charge, it’ll last you for about 2 months, but you can further extend the battery life for up to 23 months by turning on the battery saver mode, which is incredible.
Equipped with a built-in GPS, the GPRH1000 can track essential outdoor activities such as running, trail running, cycling, and swimming. It also features heart rate measurement, blood oxygen monitoring, sleep tracking with detailed sleep stages, and smart notifications for calls, messages, emails, and reminders.
Plus, the handy phone finder function helps you locate your smartphone if it’s misplaced nearby. Compatible with both Android and iOS devices, the G-Shock Rangeman GPRH1000 combines durability, utility, and long-lasting power in a single watch.
7. Casio Pro Trek PRG-340 Series
Last smartwatch on the list is the Casio Pro Trek PRG-340, which belongs to Casio’s Pro Trek watch lineup. It is made for all the explorers who like to go on hikes, treks, or other similar activities. The Pro Trek PRG-340 is one of the best solar-powered smartwatches by Casio. These watches are eco-friendly as they are made using eco-friendly bio-mass plastics, so they also fit their tagline (one with nature).
This solar-powered smartwatch is not an average smartwatch with solar charging. The Pro Trek PRG-340 is powered by tough solar, which means that not only sunlight but also the average fluorescent lamps and other light sources can charge up this watch. You can go anywhere you want without worrying about charging or your watch going dead. On a full charge, it easily lasts for about 6 months, and with battery saver, this one also lasts for about 23 months.
It also comes with triple sensors, an Altimeter, a Barometer, and a Thermometer alongside a digital compass. This watch is made for adventures, therefore, it has all the essential tools you may need while traveling, camping, or on a hike. With its built-in sunrise and sunset time display, you can plan your adventure accordingly and get back to your camp before it gets dark.
The barometer function on the watch can be extremely useful if you like to go fishing or hunting in the mountains or the wild. As atmospheric pressure can easily fluctuate in these locations, it can cause sudden rain and storms. However, if your watch is equipped with a barometer sensor, you can focus only on the fun as it alerts you about an upcoming storm in advance.
You also won’t have to worry about it being wet or submerged in water, as this solar smartwatch comes with 100 meters of water resistance. The watch also has a rotating bezel and a super illuminator, which ensures optimum visibility even in low-light environments.
All in all, the Casio Pro Trek PRG-340 is one of the best affordable solar watches out there. However, you should know that this watch does not support Bluetooth connectivity and fitness tracking.
Things To Keep In Mind While Selecting A Solar Smartwatch
1. Brand
First and foremost, ensure that you select your watch from a reputable brand like Garmin, G-Shock, or Casio. Several watchmakers sell subpar smartwatches with solar charging. And you might end up purchasing a watch that has solar charging in the name only and doesn’t pan up to real-world usage.
2. Features
There are many varieties of solar watches, some are made for athletes and fitness enthusiasts, while others are for adventurers or even casual users. You should go for the watch that has the features that best fit your needs and which you may need often, rather than choosing a watch with lots of features that you may not need or rarely use.
3. Battery Life And Charging
Solar charging is a great feature to have, but ensure that the watch can also be charged through some other power source so you don’t have to rely only on the sun’s rays. Furthermore, it is also important that the watch offers a decent battery backup on a single charge.
FAQs
Are Solar Powered Smartwatches Any Good?
Yes, as solar smartwatches can be charged using solar energy so when you are outside hiking, running, or working you won’t need to carry a power bank with you or worry about the watch’s battery.
What Is The Best Solar Powered Smartwatch?
Garmin Fenix 8 Solar is the best solar-powered smartwatch as not only it can charge itself using solar energy but also come with several smart features like fitness and sports activity tracking, NFC payment, and more.
How Long Does Solar Smartwatch Battery Last?
Depending on the smartwatch you have selected it can range from 1 week to 6 months. For instance, Casio Solar Watches can last for months with normal usage while Garmin Solar Watches can manage about 3 weeks.
