Jaeger-LeCoultre Geophysic
Most Jaeger-LeCoultre Geophysic references take a 20 mm watch strap: 10 of 11.
Jaeger-LeCoultre Geophysic lug width by case size
11 references measured. Updated 2026-10-29.
| Case | Lug width | References | Watch strap attachment | For example |
|---|---|---|---|---|
| 39 mm | 20 mm | 5 | — | 8002520, 800652J, 8008520 |
| 40 mm | 20 mm | 2 | — | 8018420, 8018480 |
| 42 mm | 20 mm · 21 mm on 1 | 3 | — | 8102520, 8108120 |
| 44 mm | 20 mm | 1 | — | 8126420 |
References that take a different watch strap
- 8108420: 21 mm, not the 20 mm of most 42 mm cases
Every Jaeger-LeCoultre Geophysic reference
- Geophysic 1958 Pink Gold8002520
20 mm - Geophysic 1958 Platinum800652J
20 mm - Geophysic 1958 Stainless Steel8008520
20 mm - Geophysic True Second Pink Gold8012520
20 mm - Geophysic True Second Stainless Steel / Silver / Bracelet8018120
20 mm - Geophysic True Second Stainless Steel / Silver / Alligator8018420
20 mm - Geophysic True Second Stainless Steel / Blue8018480
20 mm - Geophysic Universal Time Pink Gold8102520
20 mm - Geophysic Universal Time Stainless Steel / Bracelet8108120
20 mm - Geophysic Universal Time Stainless Steel8108420
21 mm - Geophysic Tourbillon Universal Time8126420
20 mm
Other Jaeger-LeCoultre families
Inside each one the lug width often changes: it is the reference that decides.
- Reverso 223
- Master Ultra Thin 103
- Rendez-Vous 97
- Master 38
- Master Grande Tradition 38
- Master Control 37
- Polaris 37
- Duomètre 30
- Master Extreme 21
- AMVOX 11
- Rendez Vous 7
All Jaeger-LeCoultre families → · Why the size changes inside a family →