Seiko Cal. 6634 - 347

This Spring Drive model from 1973 features a 43mm Hardlex-Coated Steel case. Powered by the 6634 caliber with 29j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-f32f70d4bb05]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1973

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