Seiko Cal. 5643 - 242

The 5643-242 is a sought-after Solar piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-5515ac337f25]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1970

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