Seiko Cal. 7031 - 413

This Spring Drive model from 1971 features a 44mm Two-Tone case. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-c751a5601c4a]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1971

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