Seiko Cal. 6668 - 455

The Seiko 6668-455 represents an important milestone in Seiko's 1968 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-1031b5383ffd]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1968

Related Models

• Seiko 6394-142
• Seiko 5635-211
• Seiko 6281-865
• Seiko 7146-200
• Seiko 7183-109
• Seiko 6256-316
• Seiko 6691-898
• Seiko 6364-935
• Seiko 6669-515
• Seiko 5683-973
• Seiko 6125-170
• Seiko 7114-549