Seiko Cal. 5618 - 421

This Hand-Winding model from 1974 features a 40mm Stainless Steel case. It features a Black dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-6f63cde8df8e]

Also known as: World Timer, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1974

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