Shaun Cuff on 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
Genuine Casio 70621707 Replacement Watch Strap for Casio ALT-6000-1V AQ-10, NEW | eBay