1 / 6Jaeger-LeCoultre Master Ultra Thin Q1248420 36 mm Grey Dial
Specifications
A concise reference view of the case, dial, bracelet and movement details buyers compare first.
Case
| Diameter | 36 mm |
|---|---|
| Thickness | 9.4 mm |
| Material | Stainless steel |
| Caseback | See-Through |
| Water resistance | 5 bar / 50 m |
| Water Resistance Category | Swim |
Movement
| Calibre | Jaeger-LeCoultre Calibre 925 |
|---|---|
| Calibre family | 925 Moon-phase platform |
| Movement | automatic |
| Power reserve | 70 hours |
| Frequency | 28,800 vph |
| Jewels | 30 jewels |
| In House Movement | Yes |
Dial and bracelet
| Dial | Grey |
|---|---|
| Dial finish | Sunburst |
| Markers | Applied |
| Display | Analog |
| Date | Yes |
| Calendar | Simple |
| Clasp | Deployant |
Functions and complications
| Complications | Date, Hour, Minute, Moon phase, Seconds, Moonphase |
|---|---|
| Complication count | 6 |
| Moon phase | Yes |
Reference details
| Gender | Men's |
|---|---|
| Production status | Active |
| Origin | Switzerland |
| Warranty | 8 years |
| Size category | Medium |
Recent price movement
Tracking 8 daily market snapshots since July 2026. The solid line shows the median delivered estimate and the dashed line tracks the lowest available offer.
About this reference
The Master Ultra Thin Q1248420 scales the calendar-and-moon-phase layout to a 36 mm stainless-steel case measuring 9.4 mm thick. Its grey sunburst dial with applied markers combines the date, moon phase, hours, minutes and seconds in a compact arrangement, while the deployant clasp and see-through caseback maintain the collection's refined mechanical language. With 50 metres of water resistance, the reference carries a clear practical specification alongside its formal proportions.
Calibre 925 is an in-house automatic movement with a 70-hour reserve and 30 jewels. At 26 mm in diameter and 4 Hz, it drives the hours, minutes, seconds and moon phase in a compact arrangement. Fine finishing is visible through the display back, while Jaeger-LeCoultre's 1000 Hours Control tests the cased watch. The technical profile supports a complete display within the smaller 36 mm case.








