Seiko Cal. 6621 - 813

The Seiko 6621-813 represents an important milestone in Seiko's 1986 lineup. Powered by the 6621 caliber with 27j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-135ff87e1e4b]

Also known as: Monster, Golden Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1986

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