Seiko Cal. 4540 - 730

Released in 1986, the Cal. 4540 with design code 730 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-94d0dbeba3de]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1986

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