Seiko Cal. 4520 - 370

The 4520-370 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4520 caliber with 30j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-f8c9ee654f00]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1978

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