Seiko Cal. 6388 - 291

Seiko 6388-291

The 6388-291 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-33b80140b2cc]

Also known as: Sumo

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
11.5mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
Black
Jewels
25j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1974

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seikata-wm-33b80140b2cc