Seiko Cal. 4421 - 355

The Seiko 4421-355 represents an important milestone in Seiko's 1969 lineup. With its 19mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-16b994a4cc9d]

Also known as: Turtle, Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1969

Related Models

• Seiko 5680-465
• Seiko 0760-944
• Seiko 6136-466
• Seiko 7072-640
• Seiko 6373-949
• Seiko 0744-453
• Seiko 5630-300
• Seiko 4594-619
• Seiko 6219-887
• Seiko 7093-487
• Seiko 5291-855
• Seiko 6375-491