Seiko Cal. 4521 - 960

The Seiko 4521-960 represents an important milestone in Seiko's 1972 lineup. Powered by the 4521 caliber with 27j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-4b776b373e8e]

Also known as: Pogue, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1972

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