Seiko Cal. 6131 - 655

This Solar model from 1977 features a 43mm Titanium case. Powered by the 6131 caliber with 28j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-44e8ac0a5e4e]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

43mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1977

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