Seiko Cal. 6623 - 431

This Spring Drive model from 1994 features a 44mm PVD Black case. Powered by the 6623 caliber with 36j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-d5ee5a88bdef]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1994

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