Seiko Cal. 4423 - 506

The 4423-506 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4423 caliber with 22j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-83339b56641e]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1971

Related Models

• Seiko 4447-100
• Seiko 5212-482
• Seiko 0726-530
• Seiko 6331-534
• Seiko 5267-159
• Seiko 3869-772
• Seiko 6282-570
• Seiko 4548-103
• Seiko 7153-896
• Seiko 7029-691
• Seiko 4536-157
• Seiko 0768-428