Seiko Cal. 6621 - 391

This Spring Drive model from 1982 features a 41mm Titanium case. Powered by the 6621 caliber with 33j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-3377c34b11b9]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1982

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