Seiko Cal. 6634 - 111

The Seiko 6634-111 represents an important milestone in Seiko's 1991 lineup. Powered by the 6634 caliber with 31j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-685c60cc0bea]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1991

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