The ALT1-ZT was launched at BaselWorld 2015 as an update of the original ALT1 design. This is the first time that the design has been developed since the Z series launched in 2007. It boasts a cleaner dial with new applied SuperLumiNova® index markers on the dial and the 24hr function has been moved to the bezel for greater clarity. Greater detailing around the stepped sub dials with micro lines has been made to give the dial more depth.
