Seiko Cal. 3856 - 640

The Seiko 3856-640 represents an important milestone in Seiko's 1980 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-fb42aa33c583]

Also known as: Goldfeather

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1980

Related Models

• Seiko 7026-281
• Seiko 6642-800
• Seiko 5664-138
• Seiko 5270-512
• Seiko 7063-478
• Seiko 6139-810
• Seiko 3864-509
• Seiko 0728-151
• Seiko 4449-184
• Seiko 7042-704
• Seiko 4483-825
• Seiko 6178-437