Seiko Cal. 5644 - 158

This Spring Drive model from 1966 features a 35mm Two-Tone case. With its 22mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-09a7fd56513e]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1966

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