Seiko Cal. 4552 - 831

The Seiko 4552-831 represents an important milestone in Seiko's 1970 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-e4d3c52668bd]

Also known as: Helmet, Emperor

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1970

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