Seiko Cal. 4420 - 183

The Seiko 4420-183 represents an important milestone in Seiko's 1980 lineup. With its 21mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-94ac5cef49ed]

Also known as: Panda, Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1980

Related Models

• Seiko 4558-425
• Seiko 7133-159
• Seiko 6133-507
• Seiko 6642-422
• Seiko 3880-602
• Seiko 6331-165
• Seiko 6239-290
• Seiko 6178-992
• Seiko 5286-635
• Seiko 6196-581
• Seiko 6389-601
• Seiko 6665-579