Seiko Cal. 6638 - 463

Seiko 6638-463

The 6638-463 is a sought-after Solar piece from Seiko's golden era. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-f0ef6c21299c]

Also known as: Sumo, UFO

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
11.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
30m
Dial Color
Green
Jewels
27j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1999

Related Models

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