Seiko Cal. 6378 - 683

This Spring Drive model from 1966 features a 44mm Stainless Steel case. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-485fe8256ced]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1966

Related Models

• Seiko 0753-286
• Seiko 0730-753
• Seiko 5296-734
• Seiko 7126-878
• Seiko 4574-459
• Seiko 6293-868
• Seiko 6113-534
• Seiko 0754-514
• Seiko 4513-641
• Seiko 6372-282
• Seiko 6673-513
• Seiko 6688-980