CASIO PROTREK TRIPLE SENSOR Watch It is in working condition and its operation has been confirmed. The backlight also works properly. The TRIPLE SENSOR was a top-of-the-line model at the time of its release, featuring a compass, barometer, thermometer, and altimeter. There are signs of use, scuffs, and scratches. Please refrain from purchasing if you are looking for a pristine item. The strap has been replaced with a new, third-party one.