Seiko Cal. 0721 - 788

This Spring Drive model from 1977 features a 39mm Stainless Steel case. It features a Cream dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-8ce6ded9c275]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

26j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1977

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