Seiko Cal. 4521 - 902

Released in 1966, the Cal. 4521 with design code 902 was part of Seiko's domestic market collection. Powered by the 4521 caliber with 24j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-9f79ee714bc2]

Also known as: UFO, Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1966

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