Seiko Cal. 6661 - 789

Released in 1999, the Cal. 6661 with design code 789 was part of Seiko's domestic market collection. Powered by the 6661 caliber with 21j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-aa828da59d7d]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1999

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