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Longines Caliber L615
Longines Caliber L615

Longines Caliber L615

Brand Longines
Caliber Number L615 (L615.2, L615.3)
Base Caliber
ETA 2895-1 or 2895-2
ETA Grade
Elabore
Movement Type Automatic, self-winding mechanical
Lignes 11.5”’
Overall Diameter
26.2mm
Casing Diameter
25.6mm
Height
4.35mm
Jewel Count
27 or 30
Beat Rate / Frequency
28,800 vph / 4 Hz
Lift Angle
See variations below…
Power Reserve
42 or 50 hours (see below)
Rotor Style
Ball-bearing
Rotor Winding Direction
Bi-directional
Hand-Windable?
Yes
Anti-Shock Device
Incabloc
Regulator
ETACHRON with fine timing device
Hand Count 3
Functions Central hours; central minutes; small seconds subdial at 6:00; date at 6:00
Hacking Seconds?
Yes
Quickset Date
Yes
Country of Manufacture Switzerland, Swiss made
Known Models
Longines Evidenza (Ref: L2.642.4.73.6, L2.642.4.73.4), Longines Flagship Heritage (Ref: L4.795.4.78.2, L4.795.4.58.0), Longines Heritage Military, Longines Heritage Prestige Longines Presence (Add your watch to the comments below…)

Longines caliber L615 is a Swiss made automatic watch movement with a small seconds subdial at 6:00.

L615 Variations:

There are at least two variations of the calibre L615: L615.2 and L615.3, You can find the version in your watch by looking at the engraving on the rotor.

The main differences are outlined in the chart below.

Longines L615.2 Longines L615.3
Base Movement ETA 2895-1 ETA 2895-2
Jewel Count 30 27
Lift Angle
53 degrees 51 degrees

Which version powers your watch will depend on the age of your watch. At this time, it is unknown which model/year the evolution from .2 to .3 occurred. Please post your watch model, caliber version and original date of purchase below if possible.

L615 VS ETA 2895-X:

The base movement of the L615 is the ETA 2895-X, which itself is built on the same framework as the caliber 2892A2.

Power Reserve:

The L615 is based on the cal. 2895-X which ETA states has a power reserve of 42 hours. The Longines site at the time of this caliber listing states 50 hours – there have also been official claims of 42 hours in the past. The extended power reserve in current L615 could be thanks to recent upgrades (similar to Sellita’s Optimization Barrel), but note that depending on when your watch was made, it could fetch 42 or 50 hours of runtime.

If you have an older L615 powered watch with 42 hours PR and you want 50 hours, it might be worthwhile to contact Longines service to ask if an overhaul will include any upgrades to reach the 50 hours spec. If you get any useful information regarding this, please comment below.

Additional Resources:

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