Seiko Cal. 3866 - 123

This Hand-Winding model from 1978 features a 41mm PVD Black case. It features a Burgundy dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-647e818d9428]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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