Seiko Cal. 4438 - 712

This Spring Drive model from 1991 features a 46mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-832f5803110c]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1991

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