Seiko Cal. 6640 - 582

Seiko 6640-582

This Quartz model from 1981 features a 36mm Two-Tone case. It features a Burgundy dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-a117d4eedcea]

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
36mm
Case Thickness
8.5mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
170m
Dial Color
Burgundy
Jewels
19j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1981

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