Seiko Cal. 6645 - 308

This Spring Drive model from 1979 features a 44mm Titanium case. With its 18mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-6b3da57fd67f]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1979

Related Models

• Seiko 7128-409
• Seiko 4442-516
• Seiko 6352-519
• Seiko 6223-385
• Seiko 5626-546
• Seiko 6181-879
• Seiko 7057-225
• Seiko 6167-153
• Seiko 3872-512
• Seiko 4458-520
• Seiko 6262-698
• Seiko 6242-431