Seiko Cal. 6388 - 731

Seiko 6388-731

The 6388-731 is a sought-after Solar piece from Seiko's golden era. Powered by the 6388 caliber with 31j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-7073680a62de]

Also known as: Silverwave

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
13.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
70m
Dial Color
Black
Jewels
31j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1999

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seikata-wm-7073680a62de