Seiko Cal. 7133 - 813

The Seiko 7133-813 represents an important milestone in Seiko's 1971 lineup. Powered by the 7133 caliber with 24j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-05674931dd58]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1971

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