Seiko Cal. 5640 - 622

This Solar model from 1998 features a 37mm PVD Black case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-95586ce534c9]

Also known as: Helmet, Navigator

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1998

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