Seiko Cal. 6668 - 778

This Solar model from 1975 features a 42mm PVD Black case. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-711e68a5aa04]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1975

Related Models

• Seiko 6260-865
• Seiko 6160-514
• Seiko 6629-867
• Seiko 6140-384
• Seiko 0775-872
• Seiko 0778-600
• Seiko 6199-933
• Seiko 7147-934
• Seiko 7031-111
• Seiko 4555-403
• Seiko 6134-793
• Seiko 6667-312