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Longines Caliber L888

Longines Caliber L888

BrandLongines
Caliber NumberL888
In-House?
No
Base Caliber
ETA A31.L11
Movement TypeAutomatic
COSC?
No (Some variations are, see below)
Lignes11 1/2”’
Diameter
25.6mm
Height3.85mm
Jewels
21
Power Reserve~72 hours
Lift Angle51 degrees (unconfirmed!)
Vibrations Per Hour25,200, 3.5Hz
Shock SystemNivashock
RotorBall bearing system
Winding DirectionBi-directional
Hacking?Yes
Hand-Windable?
Yes
Hand-Count
3
FeaturesCentral hours; central minutes; central sweeping seconds; date at 3:00 (no date also available, see below)
Country of ManufactureSwitzerland, Swiss made
Known ModelsLongines 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:

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