Seiko Cal. 5640 - 318

Seiko 5640-318

The 5640-318 is a sought-after Quartz piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-444f77c29152]

Also known as: Monster

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
36mm
Case Thickness
11.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Burgundy
Jewels
26j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1969

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