Seiko Cal. 4521 - 901

The Seiko 4521-901 represents an important milestone in Seiko's 1974 lineup. Powered by the 4521 caliber with 24j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-3fe40bba0692]

Also known as: Monster

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1974

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