Seiko Cal. 5644 - 627

The Seiko 5644-627 represents an important milestone in Seiko's 1971 lineup. Powered by the 5644 caliber with 28j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-b18b9941b60b]

Also known as: Samurai

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1971

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