Seiko Cal. 5271 - 840

The 5271-840 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5271 caliber with 25j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-e2307b443e5d]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1979

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