Seiko Cal. 4531 - 166

The Seiko 4531-166 represents an important milestone in Seiko's 1999 lineup. Powered by the 4531 caliber with 23j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-959ffd18cd71]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1999

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