Seiko Cal. 5631 - 660

This Solar model from 1992 features a 46mm Two-Tone case. Powered by the 5631 caliber with 29j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-0c07ba0c18ce]

Also known as: Monster, Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1992

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