Seiko Cal. 6646 - 428

The 6646-428 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-6afd4915cc1e]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1998

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