Seiko Cal. 5644 - 396

This Spring Drive model from 1967 features a 44mm Hardlex-Coated Steel case. It features a White dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-e33005f03815]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1967

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