Seiko Cal. 3866 - 490

This Spring Drive model from 1989 features a 46mm Gold-Plated case. It features a Navy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-1ca83d1a3aa8]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1989

Related Models

• Seiko 0732-285
• Seiko 5677-594
• Seiko 5648-104
• Seiko 4487-962
• Seiko 0763-523
• Seiko 6162-652
• Seiko 7143-984
• Seiko 4491-370
• Seiko 5686-492
• Seiko 5291-501
• Seiko 6623-778
• Seiko 4528-694