Seiko Cal. 5618 - 540

The 5618-540 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-0e9366ecf7fb]

Also known as: Rally, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1981

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