Seiko Cal. 4489 - 638

The Seiko 4489-638 represents an important milestone in Seiko's 1970 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-12d21be52040]

Also known as: Rally, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1970

Related Models

• Seiko 7026-893
• Seiko 4424-720
• Seiko 4492-829
• Seiko 7055-288
• Seiko 5226-630
• Seiko 0782-935
• Seiko 6234-451
• Seiko 3864-132
• Seiko 5224-390
• Seiko 6611-447
• Seiko 4413-385
• Seiko 7170-954