Seiko Cal. 5640 - 975

The Seiko 5640-975 represents an important milestone in Seiko's 1985 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-5b985d1a5876]

Also known as: Goldfeather, Navigator

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1985

Related Models

• Seiko 0778-630
• Seiko 7095-566
• Seiko 7122-748
• Seiko 7150-920
• Seiko 0736-336
• Seiko 7179-229
• Seiko 6151-445
• Seiko 6634-270
• Seiko 6391-773
• Seiko 6210-635
• Seiko 4589-427
• Seiko 7082-791