Seiko Cal. 4420 - 905

The Seiko 4420-905 represents an important milestone in Seiko's 1972 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-f83aa91dd178]

Also known as: Shogun, UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1972

Related Models

• Seiko 0724-741
• Seiko 0782-697
• Seiko 5692-347
• Seiko 5270-515
• Seiko 6616-392
• Seiko 3815-594
• Seiko 6260-971
• Seiko 5264-737
• Seiko 6338-251
• Seiko 0743-203
• Seiko 5257-140
• Seiko 6341-936