Seiko Cal. 6631 - 995

The 6631-995 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6631 caliber with 26j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-eff45127f681]

Also known as: Sumo, UFO

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1992

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