Seiko Cal. 4441 - 727

This Spring Drive model from 1973 features a 35mm Hardlex-Coated Steel case. With its 18mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-d47a62482d01]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1973

Related Models

• Seiko 0731-349
• Seiko 6255-147
• Seiko 3871-378
• Seiko 7139-546
• Seiko 6165-235
• Seiko 6111-751
• Seiko 6667-592
• Seiko 4556-692
• Seiko 4525-155
• Seiko 0783-144
• Seiko 7038-586
• Seiko 4548-582