Seiko Cal. 6639 - 708

This Hand-Winding model from 1978 features a 46mm Titanium case. It features a Burgundy dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-3f9998c4509c]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1978

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