Seiko Cal. 4437 - 503

Released in 1971, the Cal. 4437 with design code 503 was part of Seiko's domestic market collection. It features a Silver dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-b121ea8bb213]

Also known as: UFO, Arnie

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1971

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