Seiko Cal. 3888 - 663

This Hand-Winding model from 1965 features a 45mm Hardlex-Coated Steel case. Powered by the 3888 caliber with 30j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-3c6a81f568c0]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1965

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