Seiko Cal. 4521 - 216

The Seiko 4521-216 represents an important milestone in Seiko's 1991 lineup. Powered by the 4521 caliber with 20j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-100543046a6f]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1991

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