Seiko Cal. 6647 - 727

Seiko 6647-727

The 6647-727 is a sought-after Quartz piece from Seiko's golden era. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-bac3837e3288]

Also known as: Baby Tuna

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.7mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
190m
Dial Color
Green
Jewels
27j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1975

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