Seiko Cal. 6688 - 411

The Seiko 6688-411 represents an important milestone in Seiko's 1967 lineup. It features a Black dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-d84f6a1dc02f]

Also known as: Helmet, Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1967

Related Models

• Seiko 6171-990
• Seiko 6678-273
• Seiko 6133-469
• Seiko 6225-950
• Seiko 0794-580
• Seiko 7055-675
• Seiko 4446-699
• Seiko 0732-349
• Seiko 5251-259
• Seiko 7092-176
• Seiko 7172-233
• Seiko 5220-742