I’m looking to listen to music — stored on my Android phone — while working in the backyard during the warm summer months. I don't want to wear the phone in the hot sun, but leave it on the patio. For that purpose it seemed that the best bet would be a pair of Bluetooth headphones connected wirelessly to a range extender some 80 feet (about 25 meters) away on the shaded patio. Is this feasible? What would be the minimum requirements for such a setup? Is there a better alternative?