Seiko Cal. 4421 - 638

This Solar model from 1974 features a 42mm Two-Tone case. Powered by the 4421 caliber with 23j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-0429ab55755b]

Also known as: Samurai

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1974

Related Models

• Seiko 5222-160
• Seiko 6130-814
• Seiko 6667-252
• Seiko 4457-349
• Seiko 6114-955
• Seiko 4598-729
• Seiko 6383-906
• Seiko 6398-615
• Seiko 4474-249
• Seiko 0799-565
• Seiko 7056-970
• Seiko 0743-289