Seiko Cal. 6623 - 831

Released in 1967, the Cal. 6623 with design code 831 was part of Seiko's domestic market collection. Powered by the 6623 caliber with 30j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-c5f052036ead]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1967

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