Seiko Cal. 4521 - 732

The 4521-732 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4521 caliber with 28j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-bc3afd1d8652]

Also known as: Silverwave, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1970

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