Seiko Cal. 4550 - 690

The Seiko 4550-690 represents an important milestone in Seiko's 1969 lineup. It features a White dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-bfefd99d82a1]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1969

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