Seiko Cal. 3887 - 647

The Seiko 3887-647 represents an important milestone in Seiko's 1982 lineup. It features a Black dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-03741eaeb33e]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1982

Related Models

• Seiko 7057-973
• Seiko 7193-536
• Seiko 6114-839
• Seiko 6648-710
• Seiko 5621-312
• Seiko 6616-574
• Seiko 6127-958
• Seiko 7160-262
• Seiko 7172-357
• Seiko 6682-261
• Seiko 6171-857
• Seiko 3851-610