Using the OpenRun Pro is a breeze. First, pair them with your Bluetooth device, just like you would with any other Bluetooth headphones. Once paired, you can play music or take calls. When taking calls, the dual noise - cancelling microphone will make sure your voice is clear. For a great fit, adjust the headphones to sit comfortably on your ears. Don't forget that these headphones are built for sports, so you can wear them during runs, bike rides, etc. As for charging, when the battery is low, plug them in. A quick 5 - minute charge gives you 1.5 hours of use, and a full charge gets you 10 hours. Since they have an IP55 rating, they can get wet from sweat or light rain, but don't submerge them in water. To keep them in good shape, wipe them with a soft, dry cloth after use. Store them in a cool, dry place when not in use.