Casio Pro Trek PRW3500T-7 vs Invicta Pro Diver Automatic 23681
Two divers compared — $250–$500 vs $50–$100
Quick Verdict
The Invicta Pro Diver Automatic 23681 ($50–$100) delivers Automatic (Seiko NH35A) technology in the tier below the Casio Pro Trek PRW3500T-7 ($250–$500). The Pro Diver Automatic 23681 measures 40mm and is rated 200m. The Pro Trek PRW3500T-7 justifies its premium with Casio (Japan) heritage and Tough Solar (Solar Quartz), Radio-Controlled. Both represent excellent choices in the diver category.
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Specifications Compared
| Feature | Casio Pro Trek PRW3500T-7 | Invicta Pro Diver Automatic 23681 |
|---|---|---|
| Price | $250–$500 | $50–$100 |
| Case Size | 56.9 × 53.4 × 14.8mm | 40mm |
| Movement | Tough Solar (Solar Quartz), Radio-Controlled | Automatic NH35A |
| Caliber Type | Tough Solar Quartz, Multi-Band 6 | Automatic (Seiko NH35A) |
| Power Reserve | Tough Solar (Rechargeable) | — |
| Water Resistance | 200m (20 ATM) | 200m |
| Crystal | Mineral Glass | Mineral Glass |
| Case Material | Resin / Stainless Steel, Titanium Bracelet | — |
| Origin | Casio (Japan) | Invicta (Japanese movement) |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Invicta's approach
The Casio Pro Trek PRW3500T-7 features a Resin / Stainless Steel, Titanium Bracelet case at 56.9 × 53.4 × 14.8mm with Mineral Glass protection. The Invicta Pro Diver Automatic 23681 offers steel construction at 40mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Tough Solar (Solar Quartz), Radio-Controlled vs Automatic NH35A
The Pro Trek PRW3500T-7 runs the Tough Solar (Solar Quartz), Radio-Controlled (Tough Solar Quartz, Multi-Band 6, Tough Solar (Rechargeable) power reserve) at standard frequency. The Pro Diver Automatic 23681 uses the Automatic NH35A (Automatic (Seiko NH35A), standard reserve) at standard. Power reserves are closely matched.
Wearability & Fit
56.9 × 53.4 × 14.8mm vs 40mm — different wrist presence
At 56.9 × 53.4 × 14.8mm, the Pro Trek PRW3500T-7 has a bolder wrist presence compared to the Pro Diver Automatic 23681 at 40mm. Water resistance differs: 200m (20 ATM) vs 200m.
Value & Cost of Ownership
Invicta sits in the lower tier
The Casio Pro Trek PRW3500T-7 sits at $250–$500 and the Invicta Pro Diver Automatic 23681 at $50–$100. On the specs that outlast any price: the Pro Trek PRW3500T-7 uses Mineral Glass with Tough Solar (Rechargeable), against Mineral Glass and a standard reserve on the Pro Diver Automatic 23681. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 200m
The Pro Trek PRW3500T-7 is rated to 200m (20 ATM) while the Pro Diver Automatic 23681 handles 200m. Both offer identical water resistance ratings.
Our Verdict
Casio
Pro Trek PRW3500T-7
Choose the Casio Pro Trek PRW3500T-7 if you prioritize Tough Solar Quartz, Multi-Band 6 engineering, Casio (Japan) craftsmanship, and 200m (20 ATM) water resistance. At $250–$500, it delivers Tough Solar (Solar Quartz), Radio-Controlled with Tough Solar (Rechargeable) power reserve.
Check Price on AmazonInvicta
Pro Diver Automatic 23681
Choose the Invicta Pro Diver Automatic 23681 if you value Automatic (Seiko NH35A) technology, Invicta (Japanese movement) heritage, and 40mm proportions. At $50–$100, the Automatic NH35A with ample power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio Pro Trek PRW3500T-7 and Invicta Pro Diver Automatic 23681 represent two distinct approaches to the diver category — the Casio bringing Casio (Japan) tradition while Invicta delivers Invicta (Japanese movement) engineering.
Frequently Asked Questions
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How This Page Was Made
Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.