Seiko Cal. 6610 - 931

The Seiko 6610-931 represents an important milestone in Seiko's 1993 lineup. Powered by the 6610 caliber with 34j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-ba02b43914de]

Also known as: Tuna, Bellmatic

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1993

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