Seiko Cal. 5240 - 711

The Seiko 5240-711 represents an important milestone in Seiko's 1983 lineup. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-6991f089dc45]

Also known as: Helmet, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1983

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