Seiko Cal. 4540 - 487

This Solar model from 1966 features a 37mm Two-Tone case. It features a Cream dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-a2dac9c1b4b1]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1966

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