Seiko Cal. 6636 - 439

The 6636-439 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-ea5e4d15f4d8]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1980

Related Models

• Seiko 6165-889
• Seiko 6332-145
• Seiko 4433-345
• Seiko 6354-837
• Seiko 5684-765
• Seiko 4594-294
• Seiko 3835-776
• Seiko 7092-411
• Seiko 7189-587
• Seiko 5225-368
• Seiko 3868-548
• Seiko 4577-684