Seiko Cal. 4438 - 659

The 4438-659 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4438 caliber with 18j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-5679ee36a382]

Also known as: Monster, Bullhead

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1974

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