Seiko Cal. 6635 - 300

This Automatic model from 1981 features a 36mm Stainless Steel case. Powered by the 6635 caliber with 31j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-7257532c6795]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1981

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