Seiko Cal. 5648 - 991

Seiko 5648-991

The 5648-991 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-5c9415d1e162]

Also known as: Arnie

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
12.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
140m
Dial Color
Green
Jewels
22j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1966

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