Seiko Cal. 6640 - 409

This Solar model from 1995 features a 40mm Gold-Plated case. With its 18mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-a97e7d3835f5]

Also known as: Crown, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1995

Related Models

• Seiko 4532-952
• Seiko 7060-656
• Seiko 5639-193
• Seiko 0731-999
• Seiko 6613-265
• Seiko 4544-878
• Seiko 6276-210
• Seiko 4435-108
• Seiko 6618-501
• Seiko 6335-896
• Seiko 6228-705
• Seiko 4525-518