Seiko Cal. 7091 - 761

The 7091-761 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7091 caliber with 22j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-fafe576e5618]

Also known as: Sumo, Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1992

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