Seiko Cal. 4520 - 792

The 4520-792 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4520 caliber with 22j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-bdf25acc4694]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1987

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