Seiko Cal. 6646 - 851

This Spring Drive model from 1965 features a 37mm Stainless Steel case. It features a Cream dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-f800926f37b9]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1965

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