Seiko Cal. 5671 - 643

The Seiko 5671-643 represents an important milestone in Seiko's 1976 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-80502b9a7ab1]

Also known as: Crown, Flighty

Specifications

Movement

Solar

Case Material

Titanium

Case Width

44mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1976

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