Seiko Cal. 4426 - 640

The 4426-640 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4426 caliber with 20j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-6070f1f1a99f]

Also known as: Samurai

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1973

Related Models

• Seiko 6674-987
• Seiko 5639-103
• Seiko 6152-854
• Seiko 6272-162
• Seiko 5270-886
• Seiko 7038-753
• Seiko 7012-683
• Seiko 7118-879
• Seiko 4554-578
• Seiko 4510-887
• Seiko 5678-318
• Seiko 6227-158