# Phoibos Proteus 300m Automatic Review by A.I. WatchMetrics

## Watch Summary
The Phoibos Proteus 300m Automatic is a capable tool diver in the microbrand tradition, sporting a 40mm stainless steel case with ceramic bezel, Seiko NH35A automatic movement offering 41 hours of power reserve, bold Super-LumiNova lume for excellent legibility, and 300m water resistance, making it ideal for adventure-seeking collectors on a budget who prioritize function over flash.

## Overall Watch Rating: 5.8/10.0

**Brand Metric (6.2/10.0)** - Phoibos holds a strong high-premium microbrand position, delivering consistent quality and enthusiast appeal similar to peers like Zelos or Squale at accessible prices.

**Dials & Design Metric (7.8/10.0)** - The bold indices, ceramic chapter ring, and highly legible dial with potent lume outperform many mid-tier divers like the Seiko Prospex.

**Versatility Metric (7.5/10.0)** - This robust diver transitions seamlessly from underwater adventures to casual daily wear, rivaling the flexibility of a Hamilton Khaki Frog.

**Material Metric (9.0/10.0)** - Premium sapphire with AR coating, 316L steel case, and ceramic bezel elevate it above typical budget competitors like the Citizen Promaster.

**Functions Metric (6.2/10.0)** - Core timekeeping plus date provides everyday utility on par with standard automatic divers in the $300 range.

**Movement Metric (5.7/10.0)** - The reliable Seiko NH35A offers solid performance matching mid-tier workhorses like those in Tissot or Hamilton field watches.

**Rarity Metric (2.7/10.0)** - Common production at this price point aligns with mass-market divers, lacking the exclusivity of limited microbrand runs.

**History & Innovation Metric (2.8/10.0)** - As a young microbrand with standard dive features, it trails established innovators like Blancpain's Fifty Fathoms lineage.

**Complications Metric (3.9/10.0)** - A simple date window delivers basic added utility, comparable to entry-level autos but far from true complication leaders.

## Total Performance Score (TPS): 4.0
## TPS Interpretation: Fair Value: The watch overdelivers on materials and design while meeting baseline expectations in core functionality at its price.
## WM Collector Grade: C
## Performance Insights: Excels in material quality and aesthetics to provide strong bang-for-buck against its $369 MSRP, punching above weight relative to a $1,520 implied fair price.

## Watch Data
[Picture URL] - https://phoiboswatch.com/cdn/shop/files/PY023A_1_1024x1024@2x.jpg; [backPicture] - https://phoiboswatch.com/cdn/shop/files/PY023A_5_1024x1024@2x.jpg; [lumePicture] - https://phoiboswatch.com/cdn/shop/files/PY023A_lume.jpg; [Nickname] - ; [Brand] - Phoibos; [Model] - Proteus 300m Automatic; [Country] - Hong Kong; [Product Link] - https://phoiboswatch.com/products/proteus-automatic-diver-40mm-py023a-black-dial-on-bracelet; [reviewLink] - ; [Movement Type] - Automatic; [Movement Name] - Seiko NH35A; [# MSRP] - 369; [# Secondary] - 320; [# Production] - Unlimited; [watchDescription] - Robust 300m dive watch with ceramic bezel, sapphire crystal, and Seiko automatic movement; [caseWidth] - 40; [lugToLugLength] - 48; [thickness] - 13.3; [lug] - 20; [waterResist] - 300; [powerReserve] - 41; [beatFrequency] - 21600; [lume] - BGW9 C3 Super-LumiNova; [jewels] - 24; [caseMaterial] - 316L Stainless Steel; [watchGlass] - Sapphire AR; [Bezel] - Ceramic Unidirectional; [caseback] - Screw-down Stainless Steel; [Crown] - Screw-down; [Strap] - Stainless Steel Bracelet; [Shape] - Round; [Dial] - Black; [caseShape] - Round; [Seconds] - 1; [Date] - 1; [Calendar] - 0; [Chiming] - 0; [Chronograph] - 0; [Compass] - 0; [dateCompilation] - 0; [DigitalDisplay] - 0; [Dress] - 0; [Field] - 0; [GMT] - 0; [Mechanical Alarm] - 0; [Moonphase] - 0; [Tourbillon] - 0; [worldTimer] - 0; [powerReserveIndicator] - 0; [Diver] - 1; [Pilot] - 0; [racing] - 0; [Skeleton] - 0; [Vintage] - 0; [StyleFormal] - 0; [StyleCasual] - 1; [StyleSports] - 1; [StyleTravel] - 0; [StyleAdventure] - 1; [StyleCollector] - 0; [StyleTool] - 1; [StyleStatement] - 0; [StyleVintage] - 0; [StyleSmart] - 0; [StyleCustom] - 0; [TPS_new] - 4.0; [TPSgrade] - C; [TPSimpliedPrice] - 1520;

**A.I. WatchMetrics Review v37.10 Grok 4 Fast. December 21, 2025.**