Seiko Cal. 4420 - 912

The 4420-912 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-e3a4e590b70b]

Also known as: Navigator, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1988

Related Models

• Seiko 4518-821
• Seiko 6259-316
• Seiko 0756-985
• Seiko 5698-149
• Seiko 5635-398
• Seiko 4525-522
• Seiko 6375-833
• Seiko 5613-348
• Seiko 7189-509
• Seiko 7178-602
• Seiko 6340-129
• Seiko 6137-692