Seiko Cal. 4445 - 647

This Spring Drive model from 1977 features a 37mm Two-Tone case. With its 21mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-2fcda3ff4003]

Also known as: Rally, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1977

Related Models

• Seiko 4487-231
• Seiko 6672-457
• Seiko 5656-301
• Seiko 6671-176
• Seiko 6161-972
• Seiko 6245-410
• Seiko 7040-347
• Seiko 6613-475
• Seiko 5277-137
• Seiko 4460-155
• Seiko 4589-586
• Seiko 5635-250