Seiko Cal. 4487 - 220

The Seiko 4487-220 represents an important milestone in Seiko's 1974 lineup. Powered by the 4487 caliber with 30j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-a9d4f1779383]

Also known as: Shogun, Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1974

Related Models

• Seiko 4556-177
• Seiko 5246-710
• Seiko 6148-733
• Seiko 4449-300
• Seiko 4583-777
• Seiko 4534-607
• Seiko 7116-954
• Seiko 6636-899
• Seiko 5265-759
• Seiko 7191-164
• Seiko 7179-852
• Seiko 4458-826