Seiko Cal. 4520 - 540

The 4520-540 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4520 caliber with 22j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-b43d0fc3d5aa]

Also known as: Turtle

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1979

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