Seiko Cal. 6331 - 892

The 6331-892 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6331 caliber with 36j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-6c26c519c6a0]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1971

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