Seiko Cal. 5641 - 766

The 5641-766 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5641 caliber with 24j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-edc86abea682]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1967

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