Seiko Cal. 7138 - 720

Seiko 7138-720

The 7138-720 is a sought-after Quartz piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-e9a665730b3b]

Also known as: Crown

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
12.4mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Navy
Jewels
35j
Frequency
28,800 bph
Power Reserve
46 hours
Year
1989

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