Seiko Cal. 6640 - 990

Seiko 6640-990

This Solar model from 1976 features a 35mm Stainless Steel case. With its 22mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-989b50cd4f35]

Also known as: Turtle

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
12.5mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
80m
Dial Color
Silver
Jewels
34j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1976

Related Models

seikata-wm-989b50cd4f35