Seiko Cal. 6640 - 311

Seiko 6640-311

This Solar model from 1972 features a 36mm Gold-Plated case. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-abf0e5e5e78a]

Also known as: Samurai, Helmet

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
13.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
160m
Dial Color
Navy
Jewels
33j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1972

Related Models

seikata-wm-abf0e5e5e78a