Seiko Cal. 6633 - 163

The 6633-163 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6633 caliber with 28j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-37bf47d7b6e3]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1994

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