Seiko Cal. 4421 - 641

The Seiko 4421-641 represents an important milestone in Seiko's 1968 lineup. With its 22mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-ebd5456904ba]

Also known as: Rally, Sportsmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1968

Related Models

• Seiko 5259-257
• Seiko 7047-334
• Seiko 4448-799
• Seiko 7129-323
• Seiko 6193-156
• Seiko 4532-850
• Seiko 4430-553
• Seiko 6659-909
• Seiko 4434-622
• Seiko 7154-440
• Seiko 0736-458
• Seiko 7160-623