Seiko Cal. 5645 - 421

The 5645-421 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5645 caliber with 28j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-896a08910041]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1969

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