Seiko Cal. 6340 - 691

The 6340-691 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-a551fb11a508]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1977

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