Seiko Cal. 6638 - 215

The Seiko 6638-215 represents an important milestone in Seiko's 1998 lineup. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-df072c2cf337]

Also known as: Helmet, Navigator

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1998

Related Models

• Seiko 7188-107
• Seiko 0765-884
• Seiko 6294-506
• Seiko 5285-815
• Seiko 4542-854
• Seiko 7021-747
• Seiko 5668-456
• Seiko 6674-449
• Seiko 5287-962
• Seiko 4569-464
• Seiko 6632-574
• Seiko 6271-237