Seiko Cal. 6631 - 127

This Hand-Winding model from 1999 features a 45mm Gold-Plated case. Powered by the 6631 caliber with 28j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-1d9ebdc2583d]

Also known as: Sumo, UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1999

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