Seiko Cal. 4539 - 375

This Automatic model from 1999 features a 46mm Two-Tone case. Powered by the 4539 caliber with 21j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-64f3beb4e4bf]

Also known as: Sea Horse, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1999

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