Seiko Cal. 4420 - 347

This Spring Drive model from 1989 features a 38mm PVD Black case. It features a Burgundy dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-3eceeab78ac1]

Also known as: World Timer, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1989

Related Models

• Seiko 5240-634
• Seiko 4468-212
• Seiko 0767-554
• Seiko 6625-573
• Seiko 4515-143
• Seiko 6636-834
• Seiko 7190-544
• Seiko 0744-949
• Seiko 4563-532
• Seiko 7155-503
• Seiko 5252-348
• Seiko 6146-428