Seiko Cal. 6278 - 420

The 6278-420 is a sought-after Solar piece from Seiko's golden era. Powered by the 6278 caliber with 28j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-b9c81a12ec36]

Also known as: UFO, Arnie

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1993

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