Seiko Cal. 4437 - 337

Released in 1969, the Cal. 4437 with design code 337 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-e55beed66092]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1969

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