Seiko Cal. 6645 - 718

The 6645-718 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-c4f6c0bdd7af]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1974

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