Seiko Cal. 5665 - 731

This Quartz model from 1971 features a 35mm PVD Black case. It features a Champagne dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-c4fc1efb6bed]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1971

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