Seiko Cal. 4423 - 300

The 4423-300 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4423 caliber with 20j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-5171fb9b4397]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1966

Related Models

• Seiko 3896-210
• Seiko 6340-138
• Seiko 4596-917
• Seiko 6333-560
• Seiko 6258-727
• Seiko 6310-289
• Seiko 4447-352
• Seiko 6352-395
• Seiko 6654-295
• Seiko 7049-191
• Seiko 3832-396
• Seiko 7198-372