The headphones will automatically disconnect, when the Bluetooth connection is lost due to distance.
If you return within 10 minutes, the headphones will reconnect automatically.
If it takes longer than 10 minutes, the headphones will enter a timeout state and won't reconnect automatically.
To reconnect, try the following:
1. Manually tap to reconnect the headphones from your device’s Bluetooth settings, or toggle the power switch off and then on to reinitiate the connection.
2. Press and hold the multifunction button for 10 seconds or more to restore factory settings, then re-pair the headphones.
3. If the issue persists, please download and update to the latest firmware using the Nothing X app and try again.