Seiko Cal. 4538 - 273

The 4538-273 is a sought-after Solar piece from Seiko's golden era. Powered by the 4538 caliber with 19j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-5c3de8511960]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1977

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