Seiko Cal. 0771 - 640

The Seiko 0771-640 represents an important milestone in Seiko's 1971 lineup. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-8867dadf141e]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1971

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