Seiko Cal. 7172 - 640

The Seiko 7172-640 represents an important milestone in Seiko's 1980 lineup. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-8eeb9c571510]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1980

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