Principle of sleep detection: The earbuds determine whether you're asleep based on your amplitude of movement within a specific time window. If there is minimal movement over 30 minutes, the earbuds will judge that you’ve fallen asleep and generate local sleep data. However, if you frequently toss and turn or move your head during sleep, the earbuds may misjudge that you’re still awake, resulting in no sleep data being recorded.

To rectify the issue, we recommend:

1. Reconnecting the earbuds. The latest sleep data syncs to the app only when the earbuds are connected.

2. Not opening the app every time you go to bed.

3. Connecting to the app once a week to make sure your data stays up to date.

If you have any more issues or your issue has not been resolved, please contact us for further assistance.