Seiko Cal. 4521 - 634

The 4521-634 is a sought-after Solar piece from Seiko's golden era. Powered by the 4521 caliber with 33j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-b6487b22cf19]

Also known as: Turtle, Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Champagne

Jewels

33j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1979

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