Seiko Cal. 5637 - 665

This Automatic model from 1970 features a 35mm Two-Tone case. Powered by the 5637 caliber with 25j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-c06b63cc1012]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1970

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