Marking 60 years of Double Security, this Certina DS-1 Big Date Powermatic 80 Special Edition Men\'s Watch reflects a sporty yet elegant design with an on-trend green dial and Milanese strap. At A Glance  Presented on a stainless steel Milanese strap 41mm case size with 100m water resistance Superb green dial with easy-to-read \'Big Date\' at 6 o\'clock Baton hour markers Anti-magnetic technology Scratch resistant sapphire crystal glass Double Security 60th Anniversary engraved on the case back Powered by the Powermatic 80 Swiss automatic movement Power reserve of 80 hours