Seiko Cal. 5641 - 646

The Seiko 5641-646 represents an important milestone in Seiko's 1983 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-8471aea418ae]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1983

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