Seiko Cal. 4437 - 971

Released in 1986, the Cal. 4437 with design code 971 was part of Seiko's domestic market collection. With its 18mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-9c3ad09fbcb3]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1986

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