Seiko Cal. 6391 - 448

The Seiko 6391-448 represents an important milestone in Seiko's 1993 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-bca473d20150]

Also known as: Helmet, Rally

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1993

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