Seiko Cal. 7139 - 993

The Seiko 7139-993 represents an important milestone in Seiko's 1976 lineup. Powered by the 7139 caliber with 20j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-9285cf0f716c]

Also known as: Bullhead, Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1976

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