Casio PROTREK PRT-40WWJ WWF Model EL Elephant TRIPLE SENSOR PRO TREK 1998 | eBay,Casio prt-40 vintage Pro Trek watch | eBay,Used] [Men] CASIO PROTREK PRT-40 WWF MODEL Casio Pro Trek Quartz Wrist Watch Size: Case diameter approx. 41mm Arm circumference up to approx. 20cm Color: MULTICOLLAR Manyo Net store | WatchCharts Marketplace,History | CASIO,Casio ProTreck PRT-40 Triple Sensor Compass Altimeter Men's watch Japan for sale online | eBay