Seiko Cal. 6678 - 957

The Seiko 6678-957 represents an important milestone in Seiko's 1987 lineup. Powered by the 6678 caliber with 28j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-6350e86b609e]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1987

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