Side-by-side comparison of specifications and features
Compare visual case presence and physical footprint on one shared wrist. Measure your top-down wrist width for a stronger result; lug-to-lug is used when the catalog has it.
Medium (6.7″)
Estimated top width: 56.7 mm
Preliminary range: 54.7–61.8 mm.
Watch A
Visual presence
BoldCase covers 74% of your modeled wrist width.
Physical footprint
Near the edgeEstimated clearance: 4.1 mm per side.
Watch B
Visual presence
BoldCase covers 69% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 5.9 mm per side.
Proportional guide only: visual presence and physical footprint do not predict comfort. Weight, thickness, caseback shape, rigid lugs, strap stiffness, wrist-bone prominence, wearing tension, bezel design, and case curvature change how a watch actually wears.
Start with the specifications that meaningfully differ. Expand the complete table for reference details and missing-data context.
| Specification | Jaeger-LeCoultre Polaris Chronograph | Jaeger-LeCoultre Master Ultra Thin Moon |
|---|---|---|
| Pricing | ||
| MSRPPolaris Chronograph is $800 less at MSRP | $12,000 | $12,800 |
| New PriceMaster Ultra Thin Moon is $1997.7 less based on the current snapshot | $15,000 | $13,002 |
| Used Price (Low)Master Ultra Thin Moon is $383 less at the low end | $6,597 | $6,214 |
| Used Price (High) | $7,880 | $9,671 |
| 30-Day Trend | ↓ -4.7% | ↓ -2.2% |
| Used Price Range | $6,597 - $7,880 | $6,214 - $9,671 |
| Identity | ||
| Style | Chronograph, Sports, Luxury | Dress, Luxury |
| Dimensions | ||
| DiameterMaster Ultra Thin Moon is 3mm smaller | 42mm | 39mm |
| Thickness | N/A | 9.9mm |
| Case | ||
| Water ResistancePolaris Chronograph adds 50m water resistance | 100m (recreational diving) | 50m (swimming) |
| Dial | ||
| Dial Color | Black/Blue (varies) | Silver |
| LuminousPolaris Chronograph includes luminous markers | ✓ Included | Not included |
2 fields are excluded from the differences view because one watch lacks comparable data. Use “All specs” to inspect those gaps.
Jaeger-LeCoultre Polaris Chronograph and Jaeger-LeCoultre Master Ultra Thin Moon can look close on a spec sheet, yet the tradeoffs that matter most are usually wrist presence versus easier fit, water-ready utility versus dressier everyday wear, chronograph character versus dress versatility. They both touch the luxury use case, so smaller spec differences can matter more than brand preference.
Bottom line
Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features. Choose Jaeger-LeCoultre Polaris Chronograph if you prefer more dial presence and a larger case feel; choose Jaeger-LeCoultre Master Ultra Thin Moon if you want a smaller case footprint on the wrist.
Choose Jaeger-LeCoultre Polaris Chronograph when
Jaeger-LeCoultre Polaris Chronograph is a better fit for buyers who want more wrist presence, mechanical-watch enthusiasts, chronograph styling.
Choose Jaeger-LeCoultre Master Ultra Thin Moon when
Jaeger-LeCoultre Master Ultra Thin Moon is a better fit for smaller wrists, mechanical-watch enthusiasts, dress styling.
Movement and upkeep
Jaeger-LeCoultre Polaris Chronograph: automatic movement
Jaeger-LeCoultre Master Ultra Thin Moon: automatic movement
Both use the same movement type, so maintenance differences are limited and fit or feature details should decide the purchase.
Size and wearability
Jaeger-LeCoultre Polaris Chronograph: 42mm · L2L 48.5mm
Jaeger-LeCoultre Master Ultra Thin Moon: 39mm
Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features.
Water resistance
Jaeger-LeCoultre Polaris Chronograph: 100m
Jaeger-LeCoultre Master Ultra Thin Moon: 50m
Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use.
Price and value
Jaeger-LeCoultre Polaris Chronograph: $7,644
Jaeger-LeCoultre Master Ultra Thin Moon: $7,366
These two often land in a similar price band — which usually means fit, features, and current deal quality matter more than the sticker price.
Style and use case
Jaeger-LeCoultre Polaris Chronograph: chronograph
Jaeger-LeCoultre Master Ultra Thin Moon: dress
Jaeger-LeCoultre Polaris Chronograph leans more chronograph, while Jaeger-LeCoultre Master Ultra Thin Moon pulls toward dress use case — pick the one that matches how you will actually wear it.
Crystal and materials
Jaeger-LeCoultre Polaris Chronograph: sapphire crystal · steel
Jaeger-LeCoultre Master Ultra Thin Moon: sapphire crystal · steel
Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.
Jaeger-LeCoultre Polaris Chronograph and Jaeger-LeCoultre Master Ultra Thin Moon get compared constantly because both are luxury watches, they share the same automatic movement, they sit in the same price band — so the spec sheet alone will not tell you which to buy.
Jaeger-LeCoultre Polaris Chronograph — Feature split: Jaeger-LeCoultre Polaris Chronograph adds chronograph; Jaeger-LeCoultre Master Ultra Thin Moon keeps it simpler.
Jaeger-LeCoultre Polaris Chronograph for most buyers — Feature split: Jaeger-LeCoultre Polaris Chronograph adds chronograph; Jaeger-LeCoultre Master Ultra Thin Moon keeps it simpler. Go with Jaeger-LeCoultre Master Ultra Thin Moon instead if you want the lower price — Jaeger-LeCoultre Master Ultra Thin Moon typically runs about $277 less.
Jaeger-LeCoultre Master Ultra Thin Moon usually offers the lower entry price — confirm current listings because marketplace pricing can move quickly.
These two often land in a similar price band — which usually means fit, features, and current deal quality matter more than the sticker price.
Check current deals on Amazon and eBay using the buttons below — listing prices, seller quality, and condition can change quickly.
Prices change often, so compare the latest listings and condition options before you buy.
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Jaeger-LeCoultre Polaris Chronograph
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Jaeger-LeCoultre Master Ultra Thin Moon
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Jaeger-LeCoultre Master Ultra Thin Moon — it is 39mm wide versus 42mm.
Jaeger-LeCoultre Polaris Chronograph — it is rated 100m versus 50m, which is the difference between swimming confidently and only handling splashes.
Jaeger-LeCoultre Master Ultra Thin Moon is the value pick at roughly $277 less. Pay more only if a specific difference above matters to you — otherwise the cheaper one is the smarter buy. Confirm live listings, since marketplace pricing moves.
Feature split: Jaeger-LeCoultre Polaris Chronograph adds chronograph; Jaeger-LeCoultre Master Ultra Thin Moon keeps it simpler. That is the difference you will notice day to day; the rest of the specs are close enough not to matter.
Jaeger-LeCoultre Polaris Chronograph for most buyers — Feature split: Jaeger-LeCoultre Polaris Chronograph adds chronograph; Jaeger-LeCoultre Master Ultra Thin Moon keeps it simpler. Go with Jaeger-LeCoultre Master Ultra Thin Moon instead if you want the lower price — Jaeger-LeCoultre Master Ultra Thin Moon typically runs about $277 less.
Evidence & Method
This page currently relies on normalized catalog fields and calculated differences. No external reviewer observation is used in its verdict.
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