Seiko Cal. 7136 - 831

The Seiko 7136-831 represents an important milestone in Seiko's 1968 lineup. Powered by the 7136 caliber with 22j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-de7b37c44bab]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1968

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