Seiko Cal. 6178 - 736

The Seiko 6178-736 represents an important milestone in Seiko's 1983 lineup. Powered by the 6178 caliber with 22j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-395e1f85d492]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1983

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