Seiko Cal. 6631 - 569

This Automatic model from 1970 features a 39mm PVD Black case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-4b8755e3ab9c]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1970

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