Seiko Cal. 6638 - 694

The 6638-694 is a sought-after Automatic piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-270f1888cdeb]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1997

Related Models

• Seiko 5242-154
• Seiko 6223-657
• Seiko 6385-598
• Seiko 7093-536
• Seiko 6225-351
• Seiko 5225-753
• Seiko 7120-404
• Seiko 6139-318
• Seiko 6349-592
• Seiko 7070-132
• Seiko 0725-727
• Seiko 6350-784