Only 3 stars because of the scope 100 meters which needs to be verified. I thought, my Plantronics headset (bluetooth long range) on the ears, to gardening in my small garden leaving my mac inside my little house. Deep in my land more than 10 meters apart from my wall (of the block). Nothing. not a note of music. crachouillis sometimes leaving a hope, but not nothing. I'll check the settings without believing.