Seiko Cal. 6641 - 556

The Seiko 6641-556 represents an important milestone in Seiko's 1969 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-7186440c5fab]

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1969

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