Invicta Pro Diver Automatic vs Orient Bambino Open Heart
Invicta's diver meets Orient's timepiece
Quick Verdict
The Invicta Pro Diver Automatic ($50–$100) offers Seiko NH35 Automatic (Hacking, Hand-Winding) precision in the tier below the Orient Bambino Open Heart ($250–$500). The Pro Diver Automatic measures 40mm and is rated 200m (20 ATM). The Bambino Open Heart counters with Japanese Movement craftsmanship and 30m (3 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Specifications Compared
| Feature | Invicta Pro Diver Automatic | Orient Bambino Open Heart |
|---|---|---|
| Price | $50–$100 | $250–$500 |
| Case Size | 40mm | 40.5mm |
| Movement | Automatic Seiko NH35 | Automatic Caliber F6T22 |
| Caliber Type | Seiko NH35 Automatic (Hacking, Hand-Winding) | Orient In-House Automatic, hand-winding and hacking |
| Power Reserve | 41 Hours | 40 Hours |
| Water Resistance | 200m (20 ATM) | 30m (3 ATM) |
| Crystal | Mineral Glass | Domed Mineral Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Japanese Movement (Seiko NH35) | Japanese Movement |
Category-by-Category Analysis
Design & Aesthetics
Invicta's design language vs Orient's approach
The Invicta Pro Diver Automatic features a Stainless Steel case at 40mm with Mineral Glass 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 Seiko NH35 vs Automatic Caliber F6T22
The Pro Diver Automatic runs the Automatic Seiko NH35 (Seiko NH35 Automatic (Hacking, Hand-Winding), 41 Hours power reserve) at 21,600 vph (3 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 Pro Diver Automatic edges ahead on power reserve.
Wearability & Fit
40mm vs 40.5mm — different wrist presence
At 40mm, the Pro Diver Automatic wears more compactly on smaller wrists compared to the Bambino Open Heart at 40.5mm. Water resistance differs: 200m (20 ATM) vs 30m (3 ATM).
Value & Cost of Ownership
Invicta sits in the lower tier
The Invicta Pro Diver Automatic sits at $50–$100 and the Orient Bambino Open Heart at $250–$500. On the specs that outlast any price: the Pro Diver Automatic uses Mineral Glass with 41 Hours, against Domed Mineral Crystal and 40 Hours on the Bambino Open Heart. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 30m (3 ATM)
The Pro Diver Automatic is rated to 200m (20 ATM) while the Bambino Open Heart handles 30m (3 ATM). The Pro Diver Automatic is better suited for water activities.
Our Verdict
Invicta
Pro Diver Automatic
Choose the Invicta Pro Diver Automatic if you prioritize Seiko NH35 Automatic (Hacking, Hand-Winding) engineering, Japanese Movement (Seiko NH35) craftsmanship, and 200m (20 ATM) water resistance. At $50–$100, it delivers Automatic Seiko NH35 with 41 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 Invicta Pro Diver Automatic and Orient Bambino Open Heart represent two distinct approaches to fine watchmaking — the Invicta bringing Japanese Movement (Seiko NH35) 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.