Seiko Cal. 5620 - 644

The Seiko 5620-644 represents an important milestone in Seiko's 1984 lineup. Powered by the 5620 caliber with 28j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-3955c85eb388]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1984

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