Seiko Cal. 4441 - 440

Released in 1975, the Cal. 4441 with design code 440 was part of Seiko's domestic market collection. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-f9dbd324fc20]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1975

Related Models

• Seiko 6626-429
• Seiko 0712-969
• Seiko 3827-390
• Seiko 6672-533
• Seiko 5288-805
• Seiko 7093-742
• Seiko 3863-496
• Seiko 7197-681
• Seiko 6223-344
• Seiko 5630-633
• Seiko 4473-226
• Seiko 6273-737