Seiko Cal. 6178 - 786

The Seiko 6178-786 represents an important milestone in Seiko's 1977 lineup. Powered by the 6178 caliber with 31j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-e6244dfb7b8c]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1977

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