Longines Master Collection Moonphase vs Orient Bambino Open Heart
Longines's dress watch meets Orient's timepiece
Quick Verdict
The Orient Bambino Open Heart ($250–$500) delivers Orient In-House Automatic, hand-winding and hacking technology in the tier below the Longines Master Collection Moonphase ($2,500–$5,000). The Bambino Open Heart measures 40.5mm and is rated 30m (3 ATM). The Master Collection Moonphase justifies its premium with Swiss Made heritage and Automatic Caliber L899. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Longines Master Collection Moonphase | Orient Bambino Open Heart |
|---|---|---|
| Price | $2,500–$5,000 | $250–$500 |
| Case Size | 40mm | 40.5mm |
| Movement | Automatic Caliber L899 | Automatic Caliber F6T22 |
| Caliber Type | Automatic (ETA A31.L91 base) | Orient In-House Automatic, hand-winding and hacking |
| Power Reserve | 72 Hours | 40 Hours |
| Water Resistance | 30m (3 ATM) | 30m (3 ATM) |
| Crystal | Sapphire Crystal | Domed Mineral Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Japanese Movement |
Category-by-Category Analysis
Design & Aesthetics
Longines's design language vs Orient's approach
The Longines Master Collection Moonphase features a Stainless Steel case at 40mm with Sapphire Crystal protection. The Orient Bambino Open Heart offers Stainless Steel construction at 40.5mm with Domed Mineral Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Caliber L899 vs Automatic Caliber F6T22
The Master Collection Moonphase runs the Automatic Caliber L899 (Automatic (ETA A31.L91 base), 72 Hours power reserve) at 25,200 vph (3.5 Hz) frequency. The Bambino Open Heart uses the Automatic Caliber F6T22 (Orient In-House Automatic, hand-winding and hacking, 40 Hours reserve) at 21,600 vph (3 Hz). The Master Collection Moonphase edges ahead on power reserve.
Wearability & Fit
40mm vs 40.5mm — different wrist presence
At 40mm, the Master Collection Moonphase wears more compactly on smaller wrists compared to the Bambino Open Heart at 40.5mm. Water resistance differs: 30m (3 ATM) vs 30m (3 ATM).
Value & Cost of Ownership
Orient sits in the lower tier
The Longines Master Collection Moonphase sits at $2,500–$5,000 and the Orient Bambino Open Heart at $250–$500. On the specs that outlast any price: the Master Collection Moonphase uses Sapphire Crystal with 72 Hours, against Domed Mineral Crystal and 40 Hours on the Bambino Open Heart. Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 30m (3 ATM)
The Master Collection Moonphase is rated to 30m (3 ATM) while the Bambino Open Heart handles 30m (3 ATM). Both offer identical water resistance ratings.
Our Verdict
Longines
Master Collection Moonphase
Choose the Longines Master Collection Moonphase if you prioritize Automatic (ETA A31.L91 base) engineering, Swiss Made craftsmanship, and 30m (3 ATM) water resistance. At $2,500–$5,000, it delivers Automatic Caliber L899 with 72 Hours power reserve.
Check Price on AmazonOrient
Bambino Open Heart
Choose the Orient Bambino Open Heart if you value Orient In-House Automatic, hand-winding and hacking technology, Japanese Movement heritage, and 40.5mm proportions. At $250–$500, the Automatic Caliber F6T22 with 40 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Longines Master Collection Moonphase and Orient Bambino Open Heart represent two distinct approaches to fine watchmaking — the Longines bringing Swiss Made tradition while Orient delivers 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.