# Spinnaker Spence 300 Review by A.I. WatchMetrics

## Watch Summary
The Spinnaker Spence 300 is a robust tool diver blending modern aesthetics with practical functionality, featuring a 42mm stainless steel case, unidirectional ceramic bezel, and legible black sunburst dial accented by sword hands and bold lume-filled indices, powered by a reliable Sellita SW200-1 automatic movement offering 38 hours of power reserve, making it an excellent choice for budget-conscious adventure enthusiasts seeking a no-nonsense 300m dive watch.

## Overall Watch Rating: 5.4/10.0

**Material Metric (8.5/10.0)** - The stainless steel case paired with a domed sapphire crystal with AR coating and ceramic bezel delivers premium build quality comparable to entry-level Oris divers.
**Versatility Metric (7.5/10.0)** - This watch transitions seamlessly from underwater adventures to casual weekend wear, outperforming basic field watches in water resistance and legibility.
**Dials & Design Metric (7.6/10.0)** - Clean sunburst dial with excellent C3 lume and precise markers offers superior readability akin to well-executed Seiko Prospex models.
**Brand Metric (6.2/10.0)** - Spinnaker punches above its weight as an enthusiast microbrand, similar to Baltic or Monta in delivering value-driven tool watches.
**Functions Metric (5.2/10.0)** - Standard timekeeping with date and dive bezel provides everyday utility on par with mid-tier automatics like the Tissot Seastar.
**Movement Metric (4.8/10.0)** - The Sellita SW200-1 is a dependable workhorse movement matching the reliability of Hamilton's ETA-based calibers without advanced finishing.
**Rarity Metric (3.7/10.0)** - At its price point, it offers solid exclusivity through microbrand appeal but lacks limited production status like some NTH divers.
**History & Innovation Metric (3.5/10.0)** - As a young Australian brand, it draws on nautical themes without groundbreaking contributions seen in established names like Blancpain.
**Complications Metric (1.2/10.0)** - A simple date window adds minor utility, falling short of the chronograph complexity in comparable Certina DS Action watches.

## Total Performance Score (TPS): 7.8
## TPS Interpretation: Exceptional Value: The watch vastly overdelivers on materials and versatility relative to its affordable price point.
## WM Collector Grade: A-
## Performance Insights: Excels in material quality and design legibility while movement and complications are average, providing outstanding value against an implied price of around $320.
## Watch Data
[Picture URL] - https://spinnaker-watches.com/cdn/shop/files/SPENCE300_BK_1_2048x.jpg?v=1702289563; [backPicture] - https://spinnaker-watches.com/cdn/shop/files/SPENCE300_BK_2_2048x.jpg?v=1702289563; [lumePicture] - https://spinnaker-watches.com/cdn/shop/files/SPENCE300_lume.jpg?v=1702289563; [Nickname] - Spence 300 Diver; [Brand] - Spinnaker; [Model] - Spence 300; [Country] - Australia; [Product Link] - https://spinnaker-watches.com/products/spence-300-auto-dive-watch-sp-5039-04; [reviewLink] - ; [Movement Type] - Automatic; [Movement Name] - Sellita SW200-1; [# MSRP] - 695; [# Secondary] - 525; [# Production] - Unlimited; [watchDescription] - 42mm stainless steel 300m dive watch with ceramic bezel Sellita automatic and Super-LumiNova; [caseWidth] - 42; [lugToLugLength] - 49.5; [thickness] - 13; [lug] - 22; [waterResist] - 300; [powerReserve] - 38; [beatFrequency] - 28800; [lume] - C3 Super-LumiNova; [jewels] - 26; [caseMaterial] - Stainless Steel; [watchGlass] - Sapphire anti-reflective; [Bezel] - Ceramic Unidirectional; [caseback] - Solid Screw-Down; [Crown] - Screw-Down; [Strap] - FKM Rubber; [Shape] - Round; [Dial] - Black Sunburst; [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] - 1; [StyleTool] - 1; [StyleStatement] - 0; [StyleVintage] - 0; [StyleSmart] - 0; [StyleCustom] - 0; [TPS_new] - 7.8; [TPSgrade] - A-; [TPSimpliedPrice] - 320;

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