Seiko Cal. 7138 - 884

The Seiko 7138-884 represents an important milestone in Seiko's 1965 lineup. Powered by the 7138 caliber with 18j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-6689d4827d5d]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1965

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