Seiko Cal. 5618 - 398

The 5618-398 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5618 caliber with 27j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-a8e64228cd78]

Also known as: Helmet, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1989

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