Seiko Cal. 4521 - 600

The 4521-600 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4521 caliber with 29j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-b83ff6ff6f41]

Also known as: UFO, Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1993

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