Frederique Constant Slimline Moonphase Manufacture vs Orient Bambino Open Heart
Frederique Constant'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 Frederique Constant Slimline Moonphase Manufacture ($2,500–$5,000). The Bambino Open Heart measures 40.5mm and is rated 30m (3 ATM). The Slimline Moonphase Manufacture justifies its premium with Swiss Made heritage and Automatic FC-705 (In-House). Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Frederique Constant Slimline Moonphase Manufacture | Orient Bambino Open Heart |
|---|---|---|
| Price | $2,500–$5,000 | $250–$500 |
| Case Size | 42mm | 40.5mm |
| Movement | Automatic FC-705 (In-House) | Automatic Caliber F6T22 |
| Caliber Type | In-House Automatic Manufacture | Orient In-House Automatic, hand-winding and hacking |
| Power Reserve | 42 Hours | 40 Hours |
| Water Resistance | 30m (3 ATM) | 30m (3 ATM) |
| Crystal | Convex Sapphire | Domed Mineral Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Swiss Made | Japanese Movement |
Category-by-Category Analysis
Design & Aesthetics
Frederique Constant's design language vs Orient's approach
The Frederique Constant Slimline Moonphase Manufacture features a Stainless Steel case at 42mm with Convex Sapphire 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 FC-705 (In-House) vs Automatic Caliber F6T22
The Slimline Moonphase Manufacture runs the Automatic FC-705 (In-House) (In-House Automatic Manufacture, 42 Hours power reserve) at 28,800 vph (4 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 Slimline Moonphase Manufacture edges ahead on power reserve.
Wearability & Fit
42mm vs 40.5mm — different wrist presence
At 42mm, the Slimline Moonphase Manufacture has a bolder wrist presence 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 Frederique Constant Slimline Moonphase Manufacture sits at $2,500–$5,000 and the Orient Bambino Open Heart at $250–$500. On the specs that outlast any price: the Slimline Moonphase Manufacture uses Convex Sapphire with 42 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 Slimline Moonphase Manufacture is rated to 30m (3 ATM) while the Bambino Open Heart handles 30m (3 ATM). Both offer identical water resistance ratings.
Our Verdict
Frederique Constant
Slimline Moonphase Manufacture
Choose the Frederique Constant Slimline Moonphase Manufacture if you prioritize In-House Automatic Manufacture engineering, Swiss Made craftsmanship, and 30m (3 ATM) water resistance. At $2,500–$5,000, it delivers Automatic FC-705 (In-House) with 42 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 Frederique Constant Slimline Moonphase Manufacture and Orient Bambino Open Heart represent two distinct approaches to fine watchmaking — the Frederique Constant 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.