Seiko Cal. 4437 - 180

This Quartz model from 1991 features a 36mm Two-Tone case. Powered by the 4437 caliber with 18j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-bc28caf8dce4]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1991

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