Seiko Cal. 4540 - 910

Released in 1982, the Cal. 4540 with design code 910 was part of Seiko's domestic market collection. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-3bcd1ab931d3]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1982

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