# Louis Erard x Konstantin Chaykin Regulator Time-Eater Review by A.I. WatchMetrics


## Watch Summary
This avant-garde regulator collaboration blends Louis Erard's Swiss heritage with Konstantin Chaykin's whimsical Russian innovation, featuring a playful smiling face dial where hour and minute discs form mischievous eyes and a central retrograde seconds sweeps the nose, targeting collectors who crave unique, conversation-starting dress-adjacent pieces over conventional tool watches; powered by a reliable Sellita SW200-1 automatic movement with 38-hour power reserve.

## Overall Watch Rating: 7.0/10.0

**Material Metric (9.2/10.0)** - Premium 316L stainless steel case with sapphire crystal and AR coating rivals entry-level luxury finishing like Oris divers.
**Dials & Design Metric (8.7/10.0)** - Chaykin's Time-Eater regulator face with opaline silver dial and eye-disc displays delivers standout artistic flair beyond standard Seiko or Hamilton creativity.
**History & Innovation Metric (7.8/10.0)** - The Erard-Chaykin collab builds on Erard's 200-year legacy and Chaykin's boundary-pushing regulators, surpassing typical mid-tier contributions like Tissot experiments.
**Rarity Metric (7.0/10.0)** - Limited to 99 pieces at this price point, it edges out unlimited Hamiltons but trails microbrand LEs under 50 units.
**Movement Metric (6.8/10.0)** - Modified Sellita SW200-1 offers dependable automatic performance comparable to workhorse ETA 2824s in Hamilton Khaki models.
**Brand Metric (6.5/10.0)** - Louis Erard's high-premium status with indie collabs matches Christopher Ward's enthusiast appeal without reaching Tudor prestige.
**Versatility Metric (6.5/10.0)** - Playful regulator suits casual collector rotation like a bold Nomos but limits formal or sporty wear.
**Complications Metric (5.5/10.0)** - Basic regulator layout provides modest separation from plain three-handers like Seiko 5s.
**Functions Metric (5.0/10.0)** - Time-only regulator aligns with median automatic simplicity of Tissot PRX models.

## Total Performance Score (TPS): 9.9
## TPS Interpretation: Exceptional Value: The watch vastly overdelivers on design innovation and materials relative to its price, ideal for discerning collectors.
## WM Collector Grade: A+
## Performance Insights: Excels in materials, design, and rarity for standout collector appeal, though basic movement and functions keep it from luxury tiers; punches above its weight versus implied $2,900 price.

## Watch Data
[Picture URL] - https://www.louis-erard.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/2/2/220_28_40_kc01_1_1.jpg; [backPicture] - https://www.louis-erard.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/2/2/220_28_40_kc01_3_1.jpg; [lumePicture] - ; [Nickname] - Time-Eater Regulator; [Brand] - Louis Erard x Konstantin Chaykin; [Model] - Regulator Time-Eater; [Country] - Switzerland; [Product Link] - https://www.louis-erard.com/en/watch/220-28-40-kc01; [reviewLink] - ; [Movement Type] - Automatic; [Movement Name] - Sellita SW200-1; [# MSRP] - 3890; [# Secondary] - 4300; [# Production] - 99; [watchDescription] - Collaboration regulator with smiling face dial, hour/minute eye discs, and central retrograde seconds.; [caseWidth] - 40; [lugToLugLength] - 47.8; [thickness] - 10.8; [lug] - 22; [waterResist] - 50; [powerReserve] - 38; [beatFrequency] - 28800; [lume] - Super-LumiNova; [jewels] - 26; [caseMaterial] - 316L Stainless Steel; [watchGlass] - Sapphire AR; [Bezel] - Fixed; [caseback] - Sapphire; [Crown] - Screw-down; [Strap] - Alligator Leather; [Shape] - Round; [Dial] - Opaline Silver Regulator; [caseShape] - Round; [Seconds] - 1; [Date] - 0; [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] - 0; [Pilot] - 0; [racing] - 0; [Skeleton] - 0; [Vintage] - 0; [StyleFormal] - 0; [StyleCasual] - 1; [StyleSports] - 0; [StyleTravel] - 0; [StyleAdventure] - 0; [StyleCollector] - 1; [StyleTool] - 0; [StyleStatement] - 1; [StyleVintage] - 0; [StyleSmart] - 0; [StyleCustom] - 1; [TPS_new] - 9.9; [TPSgrade] - A+; [TPSimpliedPrice] - 2900;

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