Brand | Longines |
Caliber Number | L633.5 |
In-House? | No |
Base Caliber | ETA 2824-2 |
Movement Type | Automatic, self-winding mechanical |
Lignes | 11.5”’ |
Diameter | 25.6mm |
Height | 4.6mm |
Jewel Count | 25 |
Beat Rate | 28,800 vph, 4Hz |
Lift Angle | 50 degrees |
Power Reserve | 38 hours |
Rotor Style | Ball-bearing |
Rotor Winding Direction | Bi-directional |
Hand-Windable? | Yes |
Anti-Shock Device | Incabloc |
Hand Count | 3 |
Functions | Central hours; central minutes; central sweeping seconds; date at 3:00 |
Hacking Seconds? | Yes |
Quickset Date? | Yes |
Country of Manufacture | Switzerland, Swiss made |
Known Models | Longines Conquest Automatic, Longines Conquest Heritage, Longines Hydroconquest Automatic, (Add your watch to the comments below…) |
The Longines caliber 633.5 is Swiss made lever style automatic watch movement with 25 jewels and a frequency of 4 Hz (28,800 bph).
It not an ETA clone, because it literally is an ETA. The L633.5 is essentially an ETA calibre 2824-2 with a Longines branded rotor. It is said to be an Elabore grade.
Longines L633.5 VS L633.1 / L633.2:
There is a vintage cal. L633.1 which is based on the ETA 2836. Differences between the 633.1 and 633.2 are that the L633.1 has 25 jewels and the L633.2 has 17 jewels.
Additional Resources:
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