Casio Protrek Angler Line Bluetooth Link PRT-B70-1 PRTB70-1 200M Men's Watch This 200-meter water-resistant PRO TREK links to your smart phone through Bluetooth for the PRO TREK Connected app to work. Your phone gains access to features and functions of your watch and can be controlled easier than with buttons and crowns. This watch is specially designed for fishing activities, underwater or at the surface. Its FISHING TIMER alarm sets you on to a good catch period while through the phone app you gain fishing info on a total of 3,300 major coastal points worldwide.