Seiko Cal. 7191 - 366

The 7191-366 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7191 caliber with 24j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-ced7795fa262]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1965

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