Orient Mako 40 Green vs Seiko 5 SNKL23
Orient's diver meets Seiko's timepiece
Quick Verdict
The Seiko 5 SNKL23 ($100–$150) delivers Seiko Automatic (no hand-winding, no hacking) technology in the tier below the Orient Mako 40 Green ($250–$500). The 5 SNKL23 measures 37mm and is rated 30m (3 ATM). The Mako 40 Green justifies its premium with Made in Japan heritage and Automatic Caliber F6722. Both represent excellent choices in the luxury watch category.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Orient Mako 40 Green | Seiko 5 SNKL23 |
|---|---|---|
| Price | $250–$500 | $100–$150 |
| Case Size | 40mm | 37mm |
| Movement | Automatic Caliber F6722 | Automatic Caliber 7S26 |
| Caliber Type | Orient In-House Automatic (Hacking, Hand-Winding) | Seiko Automatic (no hand-winding, no hacking) |
| Power Reserve | 40 Hours | 41 Hours |
| Water Resistance | 200m (20 ATM) | 30m (3 ATM) |
| Crystal | Sapphire Crystal | Hardlex Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan | Japanese Movement |
Category-by-Category Analysis
Design & Aesthetics
Orient's design language vs Seiko's approach
The Orient Mako 40 Green features a Stainless Steel case at 40mm with Sapphire Crystal protection. The Seiko 5 SNKL23 offers Stainless Steel construction at 37mm with Hardlex Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber F6722 vs Automatic Caliber 7S26
The Mako 40 Green runs the Automatic Caliber F6722 (Orient In-House Automatic (Hacking, Hand-Winding), 40 Hours power reserve) at 21,600 vph (3 Hz) frequency. The 5 SNKL23 uses the Automatic Caliber 7S26 (Seiko Automatic (no hand-winding, no hacking), 41 Hours reserve) at 21,600 vph (3 Hz). The 5 SNKL23 offers a longer power reserve.
Wearability & Fit
40mm vs 37mm — different wrist presence
At 40mm, the Mako 40 Green has a bolder wrist presence compared to the 5 SNKL23 at 37mm. Water resistance differs: 200m (20 ATM) vs 30m (3 ATM).
Value & Cost of Ownership
Seiko sits in the lower tier
The Orient Mako 40 Green sits at $250–$500 and the Seiko 5 SNKL23 at $100–$150. On the specs that outlast any price: the Mako 40 Green uses Sapphire Crystal with 40 Hours, against Hardlex Crystal and 41 Hours on the 5 SNKL23. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 30m (3 ATM)
The Mako 40 Green is rated to 200m (20 ATM) while the 5 SNKL23 handles 30m (3 ATM). The Mako 40 Green is better suited for water activities.
Our Verdict
Orient
Mako 40 Green
Choose the Orient Mako 40 Green if you prioritize Orient In-House Automatic (Hacking, Hand-Winding) engineering, Made in Japan craftsmanship, and 200m (20 ATM) water resistance. At $250–$500, it delivers Automatic Caliber F6722 with 40 Hours power reserve.
Check Price on AmazonSeiko
5 SNKL23
Choose the Seiko 5 SNKL23 if you value Seiko Automatic (no hand-winding, no hacking) technology, Japanese Movement heritage, and 37mm proportions. At $100–$150, the Automatic Caliber 7S26 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Orient Mako 40 Green and Seiko 5 SNKL23 represent two distinct approaches to fine watchmaking — the Orient bringing Made in Japan tradition while Seiko delivers Japanese Movement engineering.
Frequently Asked Questions
More Comparisons
Explore These Watches
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.