Seiko Cal. 5631 - 927

This Hand-Winding model from 1996 features a 37mm Two-Tone case. Powered by the 5631 caliber with 23j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-317a576978b8]

Also known as: Monster, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1996

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