Seiko Cal. 4523 - 770

The Seiko 4523-770 represents an important milestone in Seiko's 1983 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-c27a2ad3fdce]

Also known as: Sumo, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1983

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