Seiko Cal. 7028 - 550

This Hand-Winding model from 1967 features a 45mm Titanium case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-b022db3456e0]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1967

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