Seiko Cal. 3887 - 642

The Seiko 3887-642 represents an important milestone in Seiko's 1986 lineup. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-1da9bce60219]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1986

Related Models

• Seiko 6664-396
• Seiko 5638-128
• Seiko 6367-464
• Seiko 4499-334
• Seiko 7085-784
• Seiko 6346-237
• Seiko 6290-455
• Seiko 6173-112
• Seiko 7163-582
• Seiko 5228-110
• Seiko 6648-266
• Seiko 0723-431