Seiko Cal. 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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