Seiko Cal. 4420 - 664

The 4420-664 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-d723de818efd]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1982

Related Models

• Seiko 0719-960
• Seiko 6151-398
• Seiko 4525-461
• Seiko 6615-247
• Seiko 6147-341
• Seiko 6280-882
• Seiko 7025-787
• Seiko 5251-462
• Seiko 5257-705
• Seiko 6617-353
• Seiko 6269-887
• Seiko 5279-584