Seiko Cal. 4521 - 918

The 4521-918 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4521 caliber with 34j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-12bf93dd9481]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1993

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