Seiko Cal. 5637 - 898

This Spring Drive model from 1983 features a 35mm Two-Tone case. Powered by the 5637 caliber with 21j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-b33accbddc5d]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1983

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