Seiko Cal. 5642 - 581

The 5642-581 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5642 caliber with 30j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-294a0dda7fd4]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

35mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1968

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