Seiko Cal. 6240 - 857

The 6240-857 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-5ef08bbe5096]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

28j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1977

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