Seiko Cal. 4437 - 933

The 4437-933 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-a78ab30e8aed]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1993

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