Seiko Cal. 6636 - 925

Seiko 6636-925

The 6636-925 is a sought-after Solar piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-7d19cbac6c1d]

Also known as: Sumo

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
41mm
Case Thickness
11.7mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Black
Jewels
18j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1986

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