Seiko Cal. 4540 - 777

This Spring Drive model from 1980 features a 40mm PVD Black case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-753006505274]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1980

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