Seiko Cal. 6678 - 640

This Spring Drive model from 1982 features a 38mm Titanium case. It features a Burgundy dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-3e08a9abf602]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1982

Related Models

• Seiko 6322-360
• Seiko 3826-211
• Seiko 6661-227
• Seiko 6641-817
• Seiko 4584-891
• Seiko 7121-229
• Seiko 7027-358
• Seiko 4432-733
• Seiko 7119-128
• Seiko 7114-572
• Seiko 4445-800
• Seiko 6656-670