Seiko Cal. 4561 - 778

The Seiko 4561-778 represents an important milestone in Seiko's 1966 lineup. It features a Silver dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-6ef473d78a00]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1966

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