When you are not able to power on the earphones, please try the followings.
1: Restore into the charging case, and take them out again
Vie Fit will automatically power on when it coming from the charging case. To restart the earphones, restore them to the charging case and take them out again.
2: Push the button for 3 seconds
You can manually power on VIE FIT by pushing 3 seconds.
3: Please check if the battery is still left.
If no battery is left, earphones are not able to be turned.
Please charge the earphones in the charging case.