Seiko Cal. 6636 - 858

This Hand-Winding model from 1983 features a 42mm Gold-Plated case. Powered by the 6636 caliber with 29j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-4003d850291d]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1983

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