Seiko Cal. 4421 - 521

This Spring Drive model from 1997 features a 42mm Two-Tone case. Powered by the 4421 caliber with 28j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-0175e35992eb]

Also known as: Goldfeather, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1997

Related Models

• Seiko 7024-488
• Seiko 3898-677
• Seiko 3857-837
• Seiko 5610-685
• Seiko 6641-894
• Seiko 3817-553
• Seiko 3824-172
• Seiko 5282-346
• Seiko 6280-292
• Seiko 6336-699
• Seiko 3846-974
• Seiko 4515-483