Seiko Cal. 4436 - 230

The Seiko 4436-230 represents an important milestone in Seiko's 1968 lineup. The Fixed bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-741ad095092b]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1968

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