Seiko Cal. 0747 - 307

The 0747-307 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0747 caliber with 18j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-7dffe8ad4b98]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1993

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