Seiko Cal. 6243 - 278

Released in 1973, the Cal. 6243 with design code 278 was part of Seiko's domestic market collection. Powered by the 6243 caliber with 20j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-8a3860cc7fb3]

Also known as: Tuna, Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1973

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