Seiko Cal. 4550 - 369

The Seiko 4550-369 represents an important milestone in Seiko's 1977 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-9f05ee6b7c0c]

Also known as: Helmet, Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1977

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