Seiko Cal. 6688 - 788

The Seiko 6688-788 represents an important milestone in Seiko's 1990 lineup. It features a Navy dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-33b53fbc9bfc]

Also known as: Crown, Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1990

Related Models

• Seiko 3845-687
• Seiko 0768-171
• Seiko 6250-900
• Seiko 6280-353
• Seiko 3822-356
• Seiko 4479-981
• Seiko 6175-666
• Seiko 4595-390
• Seiko 4473-870
• Seiko 6644-533
• Seiko 6633-693
• Seiko 6666-322