Seiko Cal. 6391 - 228

The Seiko 6391-228 represents an important milestone in Seiko's 1976 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-b6d46c8ed193]

Also known as: UFO, Sportsmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1976

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