Seiko Cal. 6140 - 628

The Seiko 6140-628 represents an important milestone in Seiko's 1970 lineup. Powered by the 6140 caliber with 34j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-16dc8b9c865e]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1970

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