Seiko Cal. 4420 - 456

The 4420-456 is a sought-after Automatic piece from Seiko's golden era. With its 18mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-8da89ef63838]

Also known as: Sumo, Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1992

Related Models

• Seiko 4486-830
• Seiko 7193-464
• Seiko 0710-703
• Seiko 5293-620
• Seiko 6628-780
• Seiko 4522-747
• Seiko 6219-576
• Seiko 7035-560
• Seiko 5613-454
• Seiko 7173-260
• Seiko 5226-300
• Seiko 6134-368