Seiko Cal. 4428 - 738

This Hand-Winding model from 1979 features a 39mm Titanium case. It features a Silver dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-694550bf28b9]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1979

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