Seiko Cal. 6634 - 116

The Seiko 6634-116 represents an important milestone in Seiko's 1990 lineup. Powered by the 6634 caliber with 18j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-bd7485dc5be1]

Also known as: UFO, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1990

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