Seiko Prospex SPB143 vs Casio G-Shock Frogman GWF-A1000
Both are dive watches in the upper tier — here's how the specs differ and which to pick.
| Spec | Seiko Prospex SPB143 | Casio G-Shock Frogman GWF-A1000 |
|---|---|---|
| Movement | Automatic | Solar / light-powered |
| Water resistance | 200m | 200m |
| Case size | 40.5mm | 53mm |
| Crystal | sapphire | sapphire |
| Style | Dive | Dive |
| Price tier | Upper | Upper |
Which should you buy?
- the Seiko Prospex SPB143 is mechanical (automatic) for the enthusiast feel and no battery; the Casio G-Shock Frogman GWF-A1000 is solar / light-powered for accuracy and low maintenance
- the Seiko Prospex SPB143 wears 40.5mm vs the Casio G-Shock Frogman GWF-A1000's 53mm — choose by wrist size
Where to buy
Check the Seiko Prospex SPB143 price on Amazon →
Check the Casio G-Shock Frogman GWF-A1000 price on Amazon →
FAQ
What's the difference between the Seiko Prospex SPB143 and the Casio G-Shock Frogman GWF-A1000?
Both are dive watches in the upper tier. The Seiko Prospex SPB143 is automatic, 200m water resistance, 40.5mm, sapphire crystal; the Casio G-Shock Frogman GWF-A1000 is solar / light-powered, 200m water resistance, 53mm, sapphire crystal.
Which is better value, the Seiko Prospex SPB143 or the Casio G-Shock Frogman GWF-A1000?
Both sit in the upper tier, so it comes down to movement, water resistance and case size — see the spec table above.
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