Seiko Cal. 4547 - 503

This Spring Drive model from 1989 features a 37mm Two-Tone case. Powered by the 4547 caliber with 23j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-8918a4b57489]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1989

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