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Top-tier supplier movement · caliber Longines Cal. L896: ETA A31.L01 base, Longines-finished, 25,200bph, 64h PR, 21j; used in Conquest Heritage; silicon hairspring, excellent value · 64h power reserve (2.7 days)
Versatile size: fits most wrists (6–7.5 in / 15–19 cm)
38 mm case. The sweet spot for the broadest range of wrist sizes. Neither too dainty nor too bold.

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Authentication

The central power reserve hand is a fragile and uncommon complication; verify it moves continuously as the watch runs down.

Known issues in the market
  • Power reserve hand is stationary; the complication mechanism has failed and is not a simple service item.
  • Power reserve hand moves erratically or in jumps rather than continuously; the indicator wheel is worn or damaged.
  • Dial printing around the power reserve arc fades on older examples; fading reduces display readability.
AreaWhat to checkWhat is correctRed flag
dialCentral power reserve hand position and movementPower reserve hand sweeps smoothly through its semicircular arc as the watch runs; hand position reflects actual reserve levelStationary power reserve hand on a running watch; hand that jumps between positions; hand that does not return to full when wound
dialPower reserve scale arc printingClean arc with clear empty and full indicators; scale lettering is crisp and consistently darkFaded arc markings; scale text that has worn away; dial that shows moisture damage around the arc area
movementCal. L896 power reserve moduleCaseback shows Longines-finished movement with power reserve gear train visible; movement winds easily from both rotor and crownMovement that winds roughly; power reserve gear train that shows corrosion or missing teeth
Common legitimate replacements
  • Power reserve hand is a specialty part; replacement outside Longines service centers is difficult and expensive.
  • Crown and stem wear is common on used examples; verify the crown clicks into each position cleanly.
Expert resources: Longines.com for the Conquest Heritage reference documentation. Watch forum threads on Cal. L896 power reserve service procedures.

Authentication guide

Last reviewed June 2026

The L896 (ETA A31.L01 with silicon hairspring) is the standout feature here. The central power-reserve hand and subdial layout are distinctive and hard to replicate convincingly.

Known reproduction risks

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LOW

The Conquest Heritage is a recent mid-range release with no known systematic reproduction. Risk is limited to mislabeled or wrong-movement examples.

  • Non-Longines movement visible through exhibition caseback
  • Power-reserve hand with incorrect arc travel
  • Applied numerals replaced with printed version after dial service

Dial variants by era

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EraDescriptionIdentifiers
2022 to presentCentral power-reserve hand sweeping a dedicated arc, small seconds at 9, date at 3
  • Silver or black dial with central power-reserve indicator (sector arc at top half)
  • Distinctive mixed Arabic and index numeral layout
  • Small seconds subdial at 9 o'clock
  • Date window at 3
  • Applied Longines script signature

Service part flags

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Power Reserve Hand

Original: Central hand sweeping a printed arc labeled with power-reserve scale

Replacement tells
  • Hand not reaching full arc position when fully wound (indicates mainspring issue, not a cosmetic fault)
  • Incorrect color or profile for the power-reserve hand vs. the time hands
Silicon Hairspring

Original: L896 fitted with silicon hairspring; not visible without removing the movement, but confers magnetic resistance

Replacement tells
  • A watch that fails a basic magnet test (running erratically near a strong magnet) may have had the silicon hairspring replaced with a conventional steel unit
Dial

Original: Matte or semi-matte dial with applied mixed numerals and printed track

Replacement tells
  • Printed numerals instead of applied indices (applied is correct for this reference)
  • Power-reserve arc graduation differs from catalog specification

Case back markings

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2022 to present
  • Exhibition caseback standard on current production
  • Movement visible: Geneva stripes on bridges, Longines-signed rotor
  • Caseback rim engraved with reference L1.648.4.78.2 and serial
  • Cal. L896 engraved on movement plate or printed on rotor

Movement tells

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  • The 64-hour power reserve of the L896 is genuine; wind the watch fully and time the rundown. Significantly less than 60 hours suggests a worn mainspring or incorrectly assembled barrel.
  • The central power-reserve complication is mechanically integrated with the mainspring barrel; any binding or stuttering in the PR hand movement indicates a service issue rather than a dial/hands problem.
  • The silicon hairspring cannot be seen without disassembly; a watchmaker confirming it is present (or absent) during service is valuable documentation for resale.
  • The L896 runs at 25,200 bph (3.5 Hz); audible beat rate should be distinctly different from a 28,800 bph caliber if you know what to listen for.
  • Rotor should engage smoothly in both directions; any ratcheting noise or slip is a worn pawl spring, common on unworn examples that sat without service.
Sources: Fratello — Conquest Heritage Central PR; Monochrome — Conquest Heritage CPR review.

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