Seiko Cal. 6640 - 915

Seiko 6640-915

This Quartz model from 1984 features a 40mm Gold-Plated case. With its 19mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-a9ec5c5b5656]

Also known as: Tuna, Crown

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
9.6mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
170m
Dial Color
Champagne
Jewels
18j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1984

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seikata-wm-a9ec5c5b5656