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
Vintage Casio Alti-thermo-twin Sensor Digital LCD Watch Japan | Etsy
Casio ALT-6000 Alti-Thermo watch Twin Sensor - Vintage pre G-Shock Casio in VGC | #282022739
Reloj vintage casio prt-30 alti-thermo sensor j - Sold through Direct Sale - 159559956
Reloj casio twin sensor 100m alti thermo - Sold at Auction - 165744380
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
CASIO VINTAGE DIGITAL WATCH PRO TREK PRT-30 1406 ALTI -THERMO TWIN SENSOR | WatchCharts
CASIO ALT-6000 VINTAGE TWIN SENSOR WATCH ALTI-THERMO VGC. NEW BATTERY AND STRAP | #1778335417
NOS RARE Vintage Casio Pro Trek Prt-70 Japan Made Alti-thermo Twin Sensor Digi for sale online | eBay