| Brand | Longines |
| Caliber Number | L888 |
| In-House? | No |
| Base Caliber | ETA A31.L11 |
| Movement Type | Automatic |
| COSC? | No (Some variations are, see below) |
| Lignes | 11 1/2”’ |
| Diameter | 25.6mm |
| Height | 3.85mm |
| Jewels | 21 |
| Power Reserve | ~72 hours |
| Lift Angle | 51 degrees (unconfirmed!) |
| Vibrations Per Hour | 25,200, 3.5Hz |
| Shock System | Nivashock |
| Rotor | Ball bearing system |
| Winding Direction | Bi-directional |
| Hacking? | Yes |
| Hand-Windable? | Yes |
| Hand-Count | 3 |
| Features | Central hours; central minutes; central sweeping seconds; date at 3:00 (no date also available, see below) |
| Country of Manufacture | Switzerland, Swiss made |
| Known Models | Longines Legend Diver (L3.774.4.50.6, L3.774.4.50.0) (Add your watch in the comments below…) |
The Longines caliber L888 is 3-hand automatic watch movement based on the ETA caliber A31.L11. It is a Swiss made with 21 jewels, produced by ETA (Swatch Group).
Longines L888 Variations:
There are other versions of the calibre L888 listed below.
- L888 – Not COSC
- L888 ND (No Date) – Not COSC
- L888.2 –
- L888.3 –
- L888.4 – Silicon balance spring, COSC
- L888.4 ND – Silicon balance spring; COSC
- L888.5 – Silicon balance spring; not COSC
Editor’s note: Longines does not make it easy. Researching the differences between the various L888 calibers is its own kind of hell. There is minimal consistency. For example, on the black ceramic Hydroconquest (L3.784.4.56.9) press-release, Swatch Group makes a brief mention of the caliber L888.3 inside. Then, on the official product page, it is simply referenced as L888. Will update these pages with more info later.
Video Instruction Manual:
Additional Resources:
network of watch sites
