Seiko Cal. 4420 - 186

This Spring Drive model from 1992 features a 36mm Titanium case. Powered by the 4420 caliber with 17j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-02cb76d9d855]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1992

Related Models

• Seiko 4535-702
• Seiko 5620-375
• Seiko 7199-355
• Seiko 3888-488
• Seiko 7185-492
• Seiko 6268-158
• Seiko 3858-582
• Seiko 4498-401
• Seiko 6231-973
• Seiko 6145-889
• Seiko 7163-174
• Seiko 5657-501