Easy to carry, suitable for all people, won't fall while running. No problem with glasses. With built-in microphone, hands-free calling. Quick Charge - Built-in high performance lithium battery, 10 hours continuous answering calls, 3-5 hours music playback time, 20 days standby time, 1.5 hours fast charging.Speaker units are external - speakers that are close to the ear but not inside the ear and do not block the ear canal. Listen to your surroundings when talking or listening to music, safer on the road or in certain scenarios, more portable for business and work.Just press and hold the buttons of both earphones for about 5 seconds until the LED keeps flashing red and blue and you will hear the prompt. 2. Double-click the button of any earphone, the two earphones will be paired automatically, and display "pairing" 3. Turn on the Bluetooth of the mobile phone, search for HQB-Q25 in the list, after the connection and pairing is successful, you will hear the voice of "paired" hint.