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 69% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 5.9 mm per side.
Watch B
Visual presence
BoldCase covers 74% of your modeled wrist width.
Physical footprint
Near the edgeEstimated clearance: 4.0 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 Master Ultra Thin Moon | Jaeger-LeCoultre Polaris Date |
|---|---|---|
| Pricing | ||
| MSRPPolaris Date is $3000 less at MSRP | $12,800 | $9,800 |
| New PriceMaster Ultra Thin Moon is $65.1 less based on the current snapshot | $13,002 | $13,067 |
| Used Price (Low)Polaris Date is $99.8 less at the low end | $6,214 | $6,114 |
| Used Price (High) | $9,671 | $9,350 |
| 30-Day Trend | ↓ -2.2% | ↓ -4.2% |
| Used Price Range | $6,214 - $9,671 | $6,114 - $9,350 |
| Identity | ||
| Style | Dress, Luxury | Sports, Luxury |
| Dimensions | ||
| DiameterMaster Ultra Thin Moon is 3mm smaller | 39mm | 42mm |
| ThicknessMaster Ultra Thin Moon is 3mm thinner | 9.9mm | 12.9mm |
| Lug Width | 20mm | 21mm |
| Case | ||
| Water ResistancePolaris Date adds 150m water resistance | 50m (swimming) | 200m (diving) |
| Bezel | Fixed | Rotating inner |
| Dial | ||
| Dial Color | Silver | Black |
| LuminousPolaris Date includes luminous markers | Not included | ✓ Included |
1 field is excluded from the differences view because one watch lacks comparable data. Use “All specs” to inspect those gaps.
This Jaeger-LeCoultre Master Ultra Thin Moon vs Jaeger-LeCoultre Polaris Date comparison is less about a universal winner and more about wrist presence versus easier fit, water-ready utility versus dressier everyday wear, dress character versus sports versatility. Start with fit first — case width and lug-to-lug usually matter more than secondary features if wrist comfort is a concern.
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 Master Ultra Thin Moon if you want a smaller case footprint on the wrist; choose Jaeger-LeCoultre Polaris Date if you prefer more dial presence and a larger case feel.
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.
Choose Jaeger-LeCoultre Polaris Date when
Jaeger-LeCoultre Polaris Date is a better fit for buyers who want more wrist presence, mechanical-watch enthusiasts, sports styling.
Movement and upkeep
Jaeger-LeCoultre Master Ultra Thin Moon: automatic movement
Jaeger-LeCoultre Polaris Date: 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 Master Ultra Thin Moon: 39mm
Jaeger-LeCoultre Polaris Date: 42mm · L2L 48.7mm
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 Master Ultra Thin Moon: 50m
Jaeger-LeCoultre Polaris Date: 200m
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 Master Ultra Thin Moon: $7,366
Jaeger-LeCoultre Polaris Date: $6,478
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 Master Ultra Thin Moon: dress
Jaeger-LeCoultre Polaris Date: sports
Jaeger-LeCoultre Master Ultra Thin Moon leans more dress, while Jaeger-LeCoultre Polaris Date pulls toward sports use case — pick the one that matches how you will actually wear it.
Crystal and materials
Jaeger-LeCoultre Master Ultra Thin Moon: sapphire crystal · steel
Jaeger-LeCoultre Polaris Date: sapphire crystal · steel
Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.
Jaeger-LeCoultre Polaris Date 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 Master Ultra Thin Moon
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Jaeger-LeCoultre Polaris Date
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Jaeger-LeCoultre Master Ultra Thin Moon — it is 39mm wide versus 42mm. Thickness is 9.9mm vs 12.9mm, which also affects how it sits.
Jaeger-LeCoultre Polaris Date — it is rated 200m versus 50m, which is the difference between swimming confidently and only handling splashes.
Jaeger-LeCoultre Polaris Date is the value pick at roughly $889 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.
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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