Seiko Cal. 6631 - 247

The Seiko 6631-247 represents an important milestone in Seiko's 1998 lineup. Powered by the 6631 caliber with 32j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-92dc0b63181f]

Also known as: Tuna, Sea Horse

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1998

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