Solar / light-powered watches
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Quartz accuracy with no battery changes — light keeps it charged (Citizen Eco-Drive, Seiko Solar, Casio Tough Solar). We list 10 solar watches. All 10 are rated 100m or more, the usual line for swimming. 4 have a sapphire crystal. Cases run from 37mm to 53mm.
| Watch | Movement | WR | Case | Crystal | Style | Tier | Buy |
|---|---|---|---|---|---|---|---|
Citizen Eco-Drive BM8180 | Solar / light-powered | 100m | 37mm | mineral | Field / explorer | Entry | Check priceCheck price |
Citizen Promaster Diver BN0150 | Solar / light-powered | 200m | 44mm | mineral | Dive | Mid | Check priceCheck price |
 Citizen Eco-Drive Corso | Solar / light-powered | 100m | 40mm | sapphire | Dress | Mid | See price on AmazonCheck price |
Seiko Prospex Speedtimer Solar SSC813 | Solar / light-powered | 100m | 39mm | sapphire | Chronograph | Mid | Check priceCheck price |
Citizen Promaster Tough BN0211 | Solar / light-powered | 200m | 42mm | mineral | Field / explorer | Mid | Check priceCheck price |
| Citizen Promaster Nighthawk BJ7000 | Solar / light-powered | 200m | 42mm | mineral | Pilot / aviation | Mid | See price on AmazonCheck price |
Seiko Prospex Solar Tuna SNE575 | Solar / light-powered | 200m | 47mm | hardlex | Dive | Mid | Check priceCheck price |
| Casio G-Shock GMW-B5000D | Solar / light-powered | 200m | 43mm | sapphire | Everyday / casual | Upper | See price on AmazonCheck price |
Casio G-Shock Frogman GWF-A1000 | Solar / light-powered | 200m | 53mm | sapphire | Dive | Upper | Check priceCheck price |
Citizen Promaster Skyhawk A-T JY8078 | Solar / light-powered | 200m | 46mm | mineral | Pilot / aviation | Upper | Check priceCheck price |
Quick answers
Which solar watches have a sapphire crystal?
4 of the 10: Citizen Eco-Drive Corso, Seiko Prospex Speedtimer Solar SSC813, Casio G-Shock GMW-B5000D and Casio G-Shock Frogman GWF-A1000. Sapphire resists scratches better than mineral or acrylic. How the crystals compare.
Can you swim with solar watches?
All 10 are rated 100m or more, the usual line for regular swimming. 7 of those reach 200m or more. What the ratings mean.
What is the smallest of the solar watches?
The smallest is the Citizen Eco-Drive BM8180, at 37mm. The largest is the Casio G-Shock Frogman GWF-A1000, at 53mm. What size fits your wrist.
Head-to-head comparisons
browse by water resistance · other movement: Automatic · Quartz · Hand-wound · Meca-quartz