Seiko Cal. 3897 - 372

This Automatic model from 1968 features a 46mm Two-Tone case. Powered by the 3897 caliber with 34j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-7cd11bea7ac1]

Also known as: Sumo, Rally

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1968

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