Seiko Cal. 5664 - 446

Released in 1983, the Cal. 5664 with design code 446 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-a5b47bf9720e]

Also known as: Helmet, Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1983

Related Models

• Seiko 5252-479
• Seiko 5664-328
• Seiko 7019-131
• Seiko 4484-325
• Seiko 7131-837
• Seiko 6283-299
• Seiko 3860-332
• Seiko 5689-692
• Seiko 0781-342
• Seiko 0757-323
• Seiko 3811-234
• Seiko 7095-487