Seiko Cal. 6230 - 751

This Spring Drive model from 1975 features a 42mm Hardlex-Coated Steel case. Powered by the 6230 caliber with 20j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-755fc58ffb64]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1975

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