Seiko Cal. 5640 - 157

Seiko 5640-157

This Hand-Winding model from 1969 features a 38mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-a03c27e49cdb]

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
15.2mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Burgundy
Jewels
19j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1969

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