Seiko Cal. 6123 - 663

This Hand-Winding model from 1985 features a 42mm Hardlex-Coated Steel case. Powered by the 6123 caliber with 31j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-829d23590a1b]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1985

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