Seiko Cal. 5681 - 226

The 5681-226 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5681 caliber with 20j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-8df91dad8e69]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1979

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