Davosa Watch Ternos Medium Ceramic 166.197.02. Davosa watches are reviving the spirit of the 1960s with the Sixties edition of its popular Ternos divers watch. In this edition, the Swiss manufacturer of high quality mechanical watches focuses not only on materials and design, but also on how the watch feels on the wrist, in a bid to revive the carefree decade during which freedom in lifestyle and fashion became so important.