# Orient Classic Sun And Moon Open Heart Automatic Review by A.I. WatchMetrics

## Watch Summary
The Orient Classic Sun And Moon Open Heart Automatic is an elegant dress watch with romantic flair, featuring a textured black dial adorned with a poetic sun and moon phase indicator at 6 o'clock and an open-heart cutout at 9 o'clock exposing the ticking balance wheel of the in-house F6N43 automatic movement with 40 hours of power reserve. Its stainless steel case measures a wearable 41mm wide, blending classic proportions with subtle skeletonization for visual intrigue. Perfect for the budget-conscious enthusiast who appreciates mechanical whimsy and Japanese craftsmanship without breaking the bank, this piece offers rare astronomical complications typically seen in much pricier fare.

## Overall Watch Rating: 6.1/10.0

**Dials & Design Metric (8.2/10.0)** - The enchanting sun and moon motif paired with the open-heart window creates a dial that's artistically compelling, on par with more expensive poetic designs from Nomos Glashütte.

**Complications Metric (7.1/10.0)** - The sun and moon phase display delivers charming, functional elegance comparable to entry-level moonphase watches from brands like Frederique Constant.

**History & Innovation Metric (6.9/10.0)** - Orient's 70+ years of pioneering affordable automatics culminate in this inventive sun-moon showcase, echoing the brand's legacy of accessible innovation.

**Material Metric (6.7/10.0)** - Stainless steel case with domed mineral crystal provides solid everyday resilience, though it trails sapphire-equipped peers like Seiko Presage.

**Versatility Metric (6.6/10.0)** - Suits formal office attire to casual evenings effortlessly, but 50m water resistance limits it versus true all-rounders like the Tudor Black Bay.

**Movement Metric (6.3/10.0)** - The in-house F6N43 automatic offers reliable 21,600 vph operation and 40-hour reserve, matching the dependability of mid-tier Seiko calibers.

**Functions Metric (5.2/10.0)** - Timekeeping plus sun/moon indicator fulfills daily needs adequately, akin to basic automatics from Hamilton.

**Brand Metric (5.1/10.0)** - Orient delivers consistent mid-tier value and enthusiast cred, squarely in the wheelhouse of reliable Japanese marques like Citizen.

**Rarity Metric (2.9/10.0)** - Plentiful production keeps it accessible on the secondary market, far from the scarcity of limited-run microbrands.

## Total Performance Score (TPS): 9.7

## WM Collector Grade: A+

## Performance Insights: Dials & design and complications lead the pack while rarity trails, positioning this watch as a tremendous value well ahead of its $1800 implied price.

## TPS Interpretation: Exceptional Value: This Orient dramatically overdelivers on aesthetics, complications, and movement quality for its price, ideal for savvy collectors hunting steals.

## Watch Data
[https://orient-watch-usa.com/cdn/shop/files/1_RE-AU0001S00B_1024x1024.png?v=1694193089] - [https://orient-watch-usa.com/cdn/shop/files/1_RE-AU0001S00B_1024x1024.png?v=1694193089]; [https://orient-watch-usa.com/cdn/shop/files/2_RE-AU0001S00B_1024x1024.png?v=1694193089] - [https://orient-watch-usa.com/cdn/shop/files/2_RE-AU0001S00B_1024x1024.png?v=1694193089]; [-] - [none]; [Sun & Moon Open Heart] - [Sun & Moon Open Heart]; [Orient] - [Orient]; [Classic Sun And Moon Open Heart Automatic] - [Classic Sun And Moon Open Heart Automatic]; [Japan] - [Japan]; [https://orient-watch-usa.com/products/sun-moon-ra-au0001s00b] - [https://orient-watch-usa.com/products/sun-moon-ra-au0001s00b]; [https://www.ablogtowatch.com/orient-sun-moon-ra-au0001s00b-watch-review/] - [https://www.ablogtowatch.com/orient-sun-moon-ra-au0001s00b-watch-review/]; [Automatic] - [Automatic]; [F6N43] - [F6N43]; [0] - [0]; [Elegant automatic dress watch with sun & moon phase at 6 o'clock and open heart balance at 9 o'clock on black textured dial, dauphine hands, applied markers, leather strap.] - [Elegant automatic dress watch with sun & moon phase at 6 o'clock and open heart balance at 9 o'clock on black textured dial, dauphine hands, applied markers, leather strap.]; [41] - [41]; [47] - [47]; [12.8] - [12.8]; [22] - [22]; [50] - [50]; [40] - [40]; [21600] - [21600]; [None] - [None]; [22] - [22]; [Stainless Steel] - [Stainless Steel]; [Mineral] - [Mineral]; [Fixed Stainless Steel] - [Fixed Stainless Steel]; [Solid] - [Solid]; [Knurled Push-Pull] - [Knurled Push-Pull]; [Genuine Leather] - [Genuine Leather]; [Round] - [Round]; [Black Sun & Moon Open Heart] - [Black Sun & Moon Open Heart]; [Yes] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [Yes] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [Yes] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [Yes] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [Yes] - [Yes]; [Yes] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [Yes] - [Yes]; [No] - [No]; [No] - [No]; [No] - [No]; [No] - [No]; [Yes] - [Yes]; [9.7] - [9.7]; [A+] - [A+]; [1800] - [1800];

**A.I. WatchMetrics Review v37.4 Grok 4 Fast. December 19, 2025.**