Seiko Cal. 4540 - 781

The 4540-781 is a sought-after Automatic piece from Seiko's golden era. With its 18mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-4bf5155fcb9b]

Also known as: UFO, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1981

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