Seiko Cal. 6284 - 347

The 6284-347 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6284 caliber with 19j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-18d978e22f4a]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1973

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