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Top-tier supplier movement · caliber Hamilton Cal. H-10: ETA C07.611 base, 28,800bph, 80h PR, 21j; used in Khaki Field, Navy Scuba, Jazzmaster; excellent value 80-hour automatic · 80h power reserve (3.3 days)

Also uses Hamilton Cal. H-10

Hamilton Khaki Field Automatic 38mm Ref. H70455533, black dial, steel case
Hamilton
Khaki Field
Hamilton Khaki Navy Scuba Auto Ref. H82335131, blue dial, steel case
Hamilton
Khaki Navy
Hamilton Khaki Field Titanium Auto Ref. H70545540, black dial, titanium case
Hamilton
Khaki Field
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

A solid dial on a Jazzmaster Performer is wrong; the open-work is the defining feature and any solid dial indicates a swap.

Known issues in the market
  • Solid dial substitutions occur; the Jazzmaster Performer is specifically defined by its open-worked dial revealing the Cal. H-10 base plate.
  • Two-tone stainless and gold-PVD variants exist; verify case material matches the reference number.
  • The date at 3 must align correctly with the aperture; misaligned date disc indicates service need.
AreaWhat to checkWhat is correctRed flag
dialOpen-worked dial revealing movementCal. H-10 base plate and barrel bridge visible through the open-worked dial aperturesSolid dial with no open-work indicating a dial swap to a non-Performer Jazzmaster dial
caseCase material and finishCase material matches reference number specification, with consistent finish between case and braceletPVD coating showing base steel underneath at wear points, or case finish inconsistent with bracelet
dialDate disc alignment at 3Date numeral centered in the aperture window at all 31 positionsDate numeral partially hidden or off-center in the aperture indicating disc or mechanism misalignment
Common legitimate replacements
  • Cal. H-10 service is standard and inexpensive; the open-worked dial makes visual movement inspection easy without disassembly.
  • Two-tone PVD cases show wear at contact points; PVD wear is cosmetic and expected on used examples.
Expert resources: Hamilton Jazzmaster Performer documentation at hamiltonwatch.com. WatchUSeek Hamilton subforum for dial variant and reference number cross-matching.

Authentication guide

Last reviewed June 2026

Hamilton Jazzmaster Performer Auto (ref. H36105731), Cal. H-10 on an ETA C07.611 base. 38mm dress-sport case with the elongated Jazzmaster lug profile. 80-hour automatic.

Known reproduction risks

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LOW

The Jazzmaster Performer is an entry dress-sport watch at accessible pricing. Full reproductions are rare. Misrepresentation between Jazzmaster sub-references is more common.

  • Wrong reference number on caseback for claimed Performer vs. Maestro
  • Subdials present on a claimed Performer (would indicate a different Jazzmaster model)
  • Case lug profile too short for the Jazzmaster style

Dial variants by era

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EraDescriptionIdentifiers
2022 to presentCurrent production. Applied silver baton indices on black, blue, or silver dials. Date at 3. Case height 10.95mm.
  • Elongated Jazzmaster lug style; case tapers toward the lugs
  • Applied baton indices (not printed)
  • Date at 3 o'clock
  • No visible subdials; time-only with date
  • Case height 10.95mm

Service part flags

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Case Lug Profile

Original: Jazzmaster cases use an elongated lug that defines the line. The lug curves gently downward.

Replacement tells
  • A case with straight lugs is not the Jazzmaster case
  • Lug length or taper inconsistent with the narrow 38mm width at the crown end
Applied Indices

Original: Applied silver baton markers. Individual markers are thin rectangular bars.

Replacement tells
  • Printed indices in place of applied markers (no depth or shadow under raking light)
  • Different index shape (ovoid, diamond, or dot)

Case back markings

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2022 to present
  • Hamilton shield medallion
  • "JAZZMASTER" on caseback
  • Reference H36105731 and serial
  • "SWISS MADE"
  • "50 M / 165 FT"

Movement tells

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  • Cal. H-10 at 28,800 bph, 80-hour power reserve. Identical movement to the Khaki Field Auto and Navy Scuba. A Jazzmaster Performer with a 42-hour reserve indicates a service movement swap.
  • Caseback is solid. No display caseback on the standard Performer reference.
Sources: Hamilton official — Jazzmaster.

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Buying guidance

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