Seiko Cal. 5623 - 397

The Seiko 5623-397 represents an important milestone in Seiko's 1971 lineup. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-4230ed5b3d48]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1971

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