Seiko Cal. 4415 - 718

This Spring Drive model from 1977 features a 41mm Hardlex-Coated Steel case. It features a Silver dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-93b43e21d7c2]

Also known as: Monster, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1977

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