Seiko Cal. 3857 - 637

The Seiko 3857-637 represents an important milestone in Seiko's 1965 lineup. It features a Green dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-de438da167f4]

Also known as: Flighty

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1965

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