1. It is not advisable to wear it for bathing and swimming, 2. Please connect the bracelet when synchronizing data. 3. Use the included charging cable to charge. 4. Do not expose the handle to places with high moisture, extremely high or low temperature for a long time. 5. If the wristband crashes and restarts, please check the phone memory information to clear it and try again, or exit the APP and reopen it. control center Bluetooth call: 1. If no audio is connected within 5 minutes after the first power on, the switch will automatically turn off; Or the user manually turns off the audio Bluetooth on the bracelet, and needs to manually turn on the switch when using it again.