Seiko Cal. 6678 - 621

The Seiko 6678-621 represents an important milestone in Seiko's 1991 lineup. Powered by the 6678 caliber with 17j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-00c63942e084]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1991

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