Seiko Cal. 5644 - 527

This Hand-Winding model from 1967 features a 35mm Hardlex-Coated Steel case. Powered by the 5644 caliber with 28j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-3ebd8422cd90]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1967

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