Longines HydroConquest Automatic vs Orient Sun & Moon
Longines's diver meets Orient's dress watch
Quick Verdict
The Orient Sun & Moon ($250–$500) delivers Orient In-House Automatic (Hacking, Hand-Winding) technology in the tier below the Longines HydroConquest Automatic ($1,500–$2,500). The Sun & Moon measures 41.5mm and is rated 50m (5 ATM). The HydroConquest Automatic justifies its premium with Swiss Made heritage and Automatic L888.5. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Longines HydroConquest Automatic | Orient Sun & Moon |
|---|---|---|
| Price | $1,500–$2,500 | $250–$500 |
| Case Size | 41mm | 41.5mm |
| Movement | Automatic L888.5 | Automatic Caliber F6B24 |
| Caliber Type | ETA-Based Automatic with Silicon Balance Spring | Orient In-House Automatic (Hacking, Hand-Winding) |
| Power Reserve | 72 Hours | 40 Hours |
| Water Resistance | 300m (30 ATM) | 50m (5 ATM) |
| Crystal | Sapphire with Anti-Reflective Coating | Mineral Glass |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Longines's design language vs Orient's approach
The Longines HydroConquest Automatic features a Stainless Steel case at 41mm with Sapphire with Anti-Reflective Coating protection. The Orient Sun & Moon offers Stainless Steel construction at 41.5mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic L888.5 vs Automatic Caliber F6B24
The HydroConquest Automatic runs the Automatic L888.5 (ETA-Based Automatic with Silicon Balance Spring, 72 Hours power reserve) at 25,200 vph (3.5 Hz) frequency. The Sun & Moon uses the Automatic Caliber F6B24 (Orient In-House Automatic (Hacking, Hand-Winding), 40 Hours reserve) at 21,600 vph (3 Hz). The HydroConquest Automatic edges ahead on power reserve.
Wearability & Fit
41mm vs 41.5mm — different wrist presence
At 41mm, the HydroConquest Automatic wears more compactly on smaller wrists compared to the Sun & Moon at 41.5mm. Water resistance differs: 300m (30 ATM) vs 50m (5 ATM).
Value & Cost of Ownership
Orient sits in the lower tier
The Longines HydroConquest Automatic sits at $1,500–$2,500 and the Orient Sun & Moon at $250–$500. On the specs that outlast any price: the HydroConquest Automatic uses Sapphire with Anti-Reflective Coating with 72 Hours, against Mineral Glass and 40 Hours on the Sun & Moon. Service intervals are typically 5-7 years for both.
Water Resistance
300m (30 ATM) vs 50m (5 ATM)
The HydroConquest Automatic is rated to 300m (30 ATM) while the Sun & Moon handles 50m (5 ATM). The HydroConquest Automatic is better suited for water activities.
Our Verdict
Longines
HydroConquest Automatic
Choose the Longines HydroConquest Automatic if you prioritize ETA-Based Automatic with Silicon Balance Spring engineering, Swiss Made craftsmanship, and 300m (30 ATM) water resistance. At $1,500–$2,500, it delivers Automatic L888.5 with 72 Hours power reserve.
Check Price on AmazonOrient
Sun & Moon
Choose the Orient Sun & Moon if you value Orient In-House Automatic (Hacking, Hand-Winding) technology, Made in Japan heritage, and 41.5mm proportions. At $250–$500, the Automatic Caliber F6B24 with 40 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Longines HydroConquest Automatic and Orient Sun & Moon represent two distinct approaches to fine watchmaking — the Longines bringing Swiss Made tradition while Orient delivers Made in Japan 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.