Seiko Cal. 6240 - 435

The Seiko 6240-435 represents an important milestone in Seiko's 1971 lineup. Powered by the 6240 caliber with 27j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-f685e1893bea]

Also known as: Helmet, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1971

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