Using the Shokz OpenRun Pro is a breeze. Just pair it with your Bluetooth device, and you're ready to enjoy music or take calls. When taking calls, make sure the dual noise - cancelling microphone is close to your mouth for the best clarity. For charging, connect it to a power source. A 5 - minute quick charge gives you a decent amount of battery life, and a full charge will last 10 hours. Keep the headphones dry as much as possible, even though they have an IP55 rating. Wipe them gently with a soft cloth after use, especially if they've been exposed to sweat or rain. Don't store them in extremely hot or cold places. If you have any issues, check the user manual or contact customer support.