Seiko Cal. 7031 - 937

This Solar model from 1972 features a 39mm Two-Tone case. Powered by the 7031 caliber with 20j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-7001de3fe3b3]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1972

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