Tissot “RockWatch”

European Watch Clock and Jewellery Fair 1986 BF 324
Tissot’s new RockWatch, carved from Swiss granite, is doubtless the world’s most natural and uniquely personalised wristwatch. Each one is different for no two pieces of granite are exactly alike. So it is available in an infinite variety of nuances, with matching leather strap, a scratch-resistant sapphire crystal and the precision of Swiss quartz. (TISSOT “RockWatch”)