Seiko Cal. 3818 - 364

The 3818-364 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3818 caliber with 30j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-2505395be874]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1993

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