Seiko Cal. 3815 - 648

Seiko 3815-648

The 3815-648 is a sought-after Quartz piece from Seiko's golden era. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-5cc5c896da83]

Also known as: Sumo, UFO

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
11.9mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
30m
Dial Color
Black
Jewels
17j
Frequency
36,000 bph
Power Reserve
58 hours
Year
1990

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