Seiko Cal. 4447 - 241

This Spring Drive model from 1967 features a 44mm Hardlex-Coated Steel case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-7eda4f60b646]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1967

Related Models

• Seiko 6376-821
• Seiko 5290-457
• Seiko 3857-176
• Seiko 4490-586
• Seiko 6158-483
• Seiko 7059-681
• Seiko 7152-171
• Seiko 6625-643
• Seiko 6160-538
• Seiko 5698-956
• Seiko 5652-667
• Seiko 6285-779