Seiko Cal. 7133 - 766

The 7133-766 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7133 caliber with 30j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-bf4bf9ade07a]

Also known as: Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1985

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