Seiko Cal. 4430 - 528

This Quartz model from 1966 features a 39mm Two-Tone case. Powered by the 4430 caliber with 36j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-8515aafd4036]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1966

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