Seiko Cal. 4413 - 597

This Spring Drive model from 1982 features a 36mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-240b7d058448]

Also known as: Bellmatic, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1982

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