Seiko Cal. 6331 - 147

Released in 1977, the Cal. 6331 with design code 147 was part of Seiko's domestic market collection. Powered by the 6331 caliber with 20j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-b18de16188ea]

Also known as: Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1977

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