Seiko Cal. 6312 - 840

The 6312-840 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6312 caliber with 19j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-f66134aa60a5]

Also known as: Sumo, Shogun

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1989

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