Seiko Cal. 6380 - 978

The 6380-978 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6380 caliber with 27j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-d9580c9597c7]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1974

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