Seiko Cal. 6164 - 431

The Seiko 6164-431 represents an important milestone in Seiko's 1968 lineup. It features a Green dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-dd224756329a]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1968

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