Seiko Cal. 6640 - 521

Seiko 6640-521

This Solar model from 1994 features a 37mm Titanium case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-7c4a17385d36]

Also known as: Golden Tuna, Arnie

Specifications

Movement
Solar
Case Material
Titanium
Case Width
37mm
Case Thickness
15.3mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
130m
Dial Color
Silver
Jewels
30j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1994

Related Models

seikata-wm-7c4a17385d36