Seiko Cal. 5653 - 718

This Quartz model from 1977 features a 43mm PVD Black case. It features a Navy dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-19f2e8e13e94]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1977

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