Seiko Cal. 6391 - 622

The 6391-622 is a sought-after Solar piece from Seiko's golden era. Powered by the 6391 caliber with 21j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-bc56e4f36b22]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1992

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