Seiko Cal. 6660 - 820

This Hand-Winding model from 1973 features a 38mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-b1b7524b0095]

Also known as: World Timer, Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1973

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