Seiko Cal. 6636 - 626

This Hand-Winding model from 1975 features a 36mm Titanium case. It features a Silver dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-5535e87e9bdc]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1975

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