Seiko Cal. 6390 - 340

The Seiko 6390-340 represents an important milestone in Seiko's 1991 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-5e8ea58da1e8]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1991

Related Models

• Seiko 7047-852
• Seiko 5685-898
• Seiko 6653-997
• Seiko 5218-322
• Seiko 4537-290
• Seiko 7131-411
• Seiko 6356-174
• Seiko 6152-828
• Seiko 6299-659
• Seiko 6324-734
• Seiko 4444-528
• Seiko 3873-480