Seiko Cal. 6138 - 628

The Seiko 6138-628 represents an important milestone in Seiko's 1980 lineup. Powered by the 6138 caliber with 26j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-c37918c0497d]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1980

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