Seiko Cal. 5640 - 292

The 5640-292 is a sought-after Solar piece from Seiko's golden era. Powered by the 5640 caliber with 28j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-d6fc347def2e]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1972

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