Seiko Cal. 6678 - 270

The 6678-270 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6678 caliber with 21j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-f4d367e5cc11]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1993

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