Seiko Cal. 6637 - 795

This Automatic model from 1977 features a 45mm Stainless Steel case. Powered by the 6637 caliber with 22j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-164a16bd0f15]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1977

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