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ETA / Unitas

Unitas 6498-1

Swiss lever · introduced 1957
Beat rate
18,000 vph
Power reserve
46h
Jewels
17
Introduced
1957
Escapement
Swiss lever

The 6498-1 is the companion to the 6497-1, differing only in the sub-seconds position at nine o'clock versus six o'clock. Functionally and dimensionally identical, the two calibers are treated as interchangeable for service purposes. The 6498 is preferred by brands wanting the traditional three-six-nine sub-seconds layout.

Specifications

Beats per hour
18,000
Jewels
17
Power reserve
46h
Diameter
36.6mm
Height
4.5mm
Escapement
Swiss lever
Introduced
1957
Finishing
Commercial
Service interval
5 years
Service cost tier
Entry

Complications

small secondsmanual wind

Known service issues

  • Identical failure modes to the 6497-1; see that entry for details

Notable in

  • Panerai Luminor Base 44mm PAM00000 (6498 variant)
  • Glycine Airman
  • Sinn 556 A

Buying advice

Practical guides for buying a watch with this caliber on the pre-owned market:

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Unitas 6498-1 | movement specs | Grail Atlas