Seiko Cal. 5243 - 540

This Spring Drive model from 1975 features a 37mm Hardlex-Coated Steel case. Powered by the 5243 caliber with 34j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-4f51bd7011c5]

Also known as: Silverwave, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1975

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