Seiko Cal. 6642 - 956

The Seiko 6642-956 represents an important milestone in Seiko's 1975 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-8a030e643c46]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1975

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