Using your Eartec HUB532 UltraLITE 3 headset is easy. First, make sure the headset is fully charged. You can do this by plugging the charger into the headset and then into a power source. The charging time is about 3 hours. Once charged, put the headset on your left or right ear as you prefer, and adjust the mic boom to a comfortable position. You're now ready to make full - duplex voice calls. In high - noise environments, use the noise - cancelling feature of the microphone to ensure clear communication. When not in use, store the headset in a cool, dry place. The storage temperature should be between - 10 C and 60 C. Also, keep it away from direct sunlight and water. To maintain the headset, clean the ear cups and microphone regularly with a soft, dry cloth. And don't forget to recharge the lithium polymer battery every few weeks if you're not using the headset often to keep it in good condition.