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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