Seiko Cal. 6618 - 441

Released in 1973, the Cal. 6618 with design code 441 was part of Seiko's domestic market collection. Powered by the 6618 caliber with 27j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-f2e5892a0250]

Also known as: Shogun, Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1973

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