Seiko Cal. 3818 - 243

The Seiko 3818-243 represents an important milestone in Seiko's 1974 lineup. It features a Navy dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-7a4f230f2b80]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1974

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