Shaun Cuff på Twitter: "This weekend's #VintageWatch is a #Casio ALT-6000 Alti-Thermo. Launched in 1992 this was Casio's first twin sensor watch. Along with the ATC-1000, they were forerunners to Casio's #Protrek
Casio Men's Twin Sensor Digital Chronograph Watch - SGW100B-3V
Casio OutGear – montre-bracelet à quartz pour homme, accessoire de sport numérique, avec garantie officielle, SGW-100-1V - AliExpress