Seiko Cal. 4521 - 773

The 4521-773 is a sought-after Solar piece from Seiko's golden era. Powered by the 4521 caliber with 17j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-fc51943d0380]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1982

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