Seiko Cal. 4481 - 216

The Seiko 4481-216 represents an important milestone in Seiko's 1979 lineup. Powered by the 4481 caliber with 18j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-6d08bc1678cb]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1979

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