Seiko Cal. 6243 - 400

The Seiko 6243-400 represents an important milestone in Seiko's 1978 lineup. Powered by the 6243 caliber with 20j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-ecf19ebbd6d9]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1978

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