Seiko Cal. 6637 - 107

Seiko 6637-107

The 6637-107 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-0a66247a76af]

Also known as: Arnie

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
40mm
Case Thickness
11.6mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
70m
Dial Color
Navy
Jewels
20j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1981

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