Seiko Cal. 4540 - 840

The 4540-840 is a sought-after Kinetic piece from Seiko's golden era. With its 20mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-7b624db234cd]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1980

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