Seiko Cal. 3857 - 752

The Seiko 3857-752 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-88a91dae0fc7]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1971

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