| Manufacturer | Jaeger-LeCoultre |
| Caliber Number | JLC 899 |
| Vibrations Per Hour | 28,800 bph |
| Power Reserve | 43 hours |
| Jewels | 32 |
| Components | 219 parts |
| Functions | Hours, minutes, center seconds, date |
| Country of Manufacture | Switzerland |
| Known Models |
Master Control Date |
This caliber JLC 899 was found in a Jaeger-LeCoultre Master Control Date in 18K gold (reference 176.2.40.S aka Q1542520). Each caliber 899 is said to be tested rigorously for 1,000 before leaving the factory.