Seiko Cal. 6635 - 515

This Quartz model from 1975 features a 45mm Hardlex-Coated Steel case. Powered by the 6635 caliber with 22j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-e38eda8d018d]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1975

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