Alright, folks, grab your coffee, and let’s get into something I’ve been really into lately: solar watches. Now, as you probably know, I’m all about timepieces. Growing up in Solothurn, I never really stood a chance. Watches were, and still are, my thing. And now, as I dive into the world of solar watches, I thought it’d be fun to share what I’ve learned and give you a beginner’s guide to understanding how solar watches work and why they’re a game-changer in the world of horology.
What Are Solar Watches?

Let me break it down for you. Solar watches are timepieces that run on light, specifically sunlight or any other light source you can find. Forget about those traditional battery-powered watches that need regular trips to the watchmaker for a battery replacement. Solar watches harness the power of light (yes, even artificial light) to recharge themselves. Underneath the dial, there are these nifty little photovoltaic cells that do the hard work. They convert light into energy, store it, and power your watch. The result? A low-maintenance watch that doesn’t need battery changes, reducing your environmental impact, and making life a whole lot easier. Pretty cool, right?
How Do Solar Watches Actually Work?
If you’re still a little confused about how they get powered up, let me explain. These watches feature photovoltaic cells—that’s the fancy name for light-absorbing panels—usually hidden under the dial or in some cases, incorporated directly into the watch face. These cells absorb light, whether it’s from the sun or a nearby lamp, and then convert it into electrical energy. Once converted, that energy is stored in a rechargeable battery (usually a lithium-ion or hybrid capacitor). This rechargeable battery powers your watch without requiring you to mess around with disposable batteries.
The beauty of solar watches is that, as long as they’re exposed to light regularly, they’ll keep ticking. You won’t have to worry about winding them every day or replacing dead batteries. It’s an ongoing cycle: absorb light, charge the battery, and keep the watch running. If you’re wondering whether they’ll work in the dark, the answer is yes—though they’ll need a solid exposure to light to recharge.
Why You Should Consider Investing In A Solar Watch
I’ll be honest, it took me a while to get fully hooked on solar watches. My first one was the Eco Drive Chandler, and recently, I got myself a Garmin Forerunner. I realised long back the sheer convenience of it all. Here are some of the biggest reasons I love them:
1. Low Maintenance:
Let’s face it, we all get busy. The last thing you want to deal with is having to take your watch in for a new battery every few months. Solar watches, once charged, can run for months or even years without needing a battery change. It’s hassle-free, which is a big deal for people like me who tend to forget these things.
2. Eco-Friendly:
One of the coolest things about solar watches is their environmental impact—or rather, the lack thereof. Traditional watches, especially those with disposable batteries, contribute to electronic waste. With solar-powered timepieces, you eliminate the need for frequent battery replacements, which is a win for sustainability. Plus, solar watches themselves are designed to last a long time, which is another bonus for the planet.
3. Convenience:
Let’s say you’re on vacation or out camping. The last thing you want is to realise your watch battery has died. With solar watches, that worry is pretty much gone. Just keep your watch exposed to light, and it’ll keep running, even if you’re in a low-light environment. Some models can even store a charge for extended periods, so you don’t have to stress about them going dead unexpectedly.
4. Long Battery Life:
The efficiency of solar watches has come a long way. Brands like Citizen and Seiko have made massive strides in solar technology, and now we’ve got watches that can run for months or even years on a single charge. I’m talking serious battery life here. This is no longer just a “novelty” feature. It’s become a genuine alternative to traditional battery-powered watches.
How to Charge and Maintain Your Solar Watch
Charging and maintaining your solar watch is pretty straightforward, but there are a couple of things I’ve learned that can really help extend its life.
Charging Your Watch:
- Sunlight: The best way to charge your solar watch is by exposing it to natural sunlight. Even a few hours can top it up fully, so make sure to leave it near a window or take it outside every now and then.
- Artificial Light: If you’re not outside much, don’t worry—bright artificial light will also do the job. I’ve charged mine under LED lights before when I didn’t have access to sunlight, and it works just fine.
- Low-Light: Some advanced solar watches are more efficient and can work in low light, but they’ll still need brighter exposure to keep their charge.
Maintaining Your Watch:
- Keep It Clean: The solar cells are designed to absorb light, so it’s important to keep the surface clean. A little dust or dirt can block the light, reducing charging efficiency. I recommend using a soft cloth to gently wipe the watch face from time to time.
- Avoid Scratches: Scratches can damage the solar cells and affect the watch’s ability to charge. So, take care when you’re wearing it or storing it away.
- Proper Storage: When you’re not wearing your solar watch, store it somewhere it can still get some light. Don’t leave it in a drawer for weeks, or you’ll find it running low on power.
Top Solar Watch Brands and Models to Consider
Now, let’s talk about the good stuff—the brands and models that are absolutely killing it in the solar watch game.
Citizen Eco-Drive

You’ve probably heard of Citizen’s Eco-Drive. This system was one of the first to really push solar watches into the mainstream, and for good reason. Citizen has perfected the art of solar charging, with models that can run for months without needing any kind of manual recharge. They’ve got a wide range of designs, from sporty divers to sleek dress watches. One of my personal favorites is the Citizen Eco-Drive Promaster Diver (200M)—a durable, water-resistant beauty that doesn’t need a battery change for years. It’s a perfect example of a watch that combines function and eco-friendly tech.
Seiko Solar Watches

Seiko’s solar watches are solid, reliable, and stylish. Seiko is known for making precise timepieces, and their solar-powered models are no different. One standout is the Seiko Solar Divers (SNE441/SNE439), which offers water resistance and great solar efficiency. If you’re looking for a dive watch with sustainability in mind, this one’s hard to beat.
Casio Tough Solar

If you’re into rugged, durable watches that can handle the outdoors, Casio’s Tough Solar lineup is where it’s at. Their G-Shock and Pro Trek models are practically indestructible and feature solar charging to boot. I’ve personally got a G-Shock GW-9400 Rangeman—this thing is built like a tank, with solar power efficiency that keeps it ticking through all my adventures. If you’re someone who loves extreme conditions, Casio Tough Solar should be on your radar.
Garmin Solar

Now, for all the fitness buffs or tech lovers, Garmin has integrated solar charging into their smartwatches. The Garmin Fenix 6 Solar and Garmin Instinct Solar are two of the top picks, offering GPS, heart-rate monitoring, and solar power to keep everything running. It’s not just a watch; it’s a mini fitness tracker that you don’t have to worry about charging constantly.
Tissot T-Touch Solar

If you want something a bit more premium, the Tissot T-Touch Solar is a great option. It combines solar power with Tissot’s signature touch-screen technology, allowing you to access functions like an altimeter, compass, and weather features—all powered by the sun. This watch looks sleek and does the job with style.
So, Are Solar Watches Worth It?

Here’s the thing: Solar watches are absolutely worth it—if you’re looking for convenience, sustainability, and reliability. I know there’s a certain charm in mechanical watches, but if you’re looking to save the environment, get a solid battery life, and avoid the hassle of constantly changing batteries, solar-powered watches are definitely the way to go.
They’ve evolved over the years, and brands like Citizen, Seiko, Casio, and Garmin have really perfected the technology, creating models that are both practical and stylish. Whether you’re into diving, fitness, or just want a stylish, eco-friendly piece on your wrist, there’s a solar watch out there for you.
So, do yourself a favour and give solar watches a shot. You might just find that the future of watchmaking has already arrived on your wrist.