Seiko Cal. 6389 - 404

Released in 1974, the Cal. 6389 with design code 404 was part of Seiko's domestic market collection. Powered by the 6389 caliber with 23j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-7ddb75fcb2b4]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1974

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