Seiko Cal. 4477 - 913

The Seiko 4477-913 represents an important milestone in Seiko's 1975 lineup. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-4ceb8937a96c]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1975

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