Seiko Cal. 3820 - 597

The 3820-597 is a sought-after Solar piece from Seiko's golden era. Powered by the 3820 caliber with 28j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-abd828523cfc]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1979

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