Seiko Cal. 3857 - 348

This Spring Drive model from 1975 features a 35mm Titanium case. With its 20mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-a179b1354132]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1975

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