Seiko Cal. 6637 - 652

This Spring Drive model from 1994 features a 37mm Two-Tone case. With its 21mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-c5cf9a427177]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1994

Related Models

• Seiko 5240-613
• Seiko 7181-888
• Seiko 5665-396
• Seiko 0792-922
• Seiko 7039-205
• Seiko 0721-657
• Seiko 6672-755
• Seiko 6391-383
• Seiko 6684-344
• Seiko 6229-374
• Seiko 4573-492
• Seiko 6232-624