Seiko Cal. 6646 - 651

The Seiko 6646-651 represents an important milestone in Seiko's 1984 lineup. Powered by the 6646 caliber with 23j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-62ba0f6610b3]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1984

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