Seiko Cal. 5631 - 187

This Kinetic model from 1991 features a 39mm Titanium case. With its 22mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-6ca4bfd10393]

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1991

Related Models

• Seiko 5646-291
• Seiko 6373-366
• Seiko 0738-351
• Seiko 5638-295
• Seiko 7116-146
• Seiko 0716-348
• Seiko 6193-235
• Seiko 3870-438
• Seiko 4469-632
• Seiko 5681-407
• Seiko 3847-222
• Seiko 4513-501