Seiko Spring Drive 9R65

Probable

The glide motion of the seconds hand is a consequence of there being no escapement to produce discrete beats — a genuinely diagnostic visual characteristic, since a stepped or ticking seconds hand is inconsistent with the technology.

Specifications

Movement manufacturer: Seiko
Power reserve: 72 hours
Winding: spring-drive
Complications: Centre seconds · Date · Power reserve indication

Architecture

Spring Drive: a conventional mainspring and going train whose regulation is handled by a Tri-Synchro Regulator using a quartz oscillator and an electromagnetic brake in place of an escapement.

Authentication notes

RegulationHigh confidence
Continuous sweep with no beat
A Spring Drive seconds hand glides continuously and silently; it does not beat. A watch presented as Spring Drive whose seconds hand steps is not running a Spring Drive movement. Strong and easy to check, and one of the rare indicators that needs neither the caseback off nor a loupe.

References using this caliber

No catalog references are linked to this caliber yet.

Provenance of this record

Sources & Evidence

Secondary sourceAtlas & Crown research

Atlas & Crown — internal catalog research notes

Atlas & Crown

Accessed: 2026-08-18

Cited for

This referenceProbable