Nokia active wireless earphones user guide

Switch the device off when a Bluetooth headset use is not allowed or when it may cause interference or danger, for example, in aircraft, in hospitals or near medical equipment, fuel, chemicals, or blasting areas. Obey all instructions in restricted areas.

All wireless devices may be susceptible to interference, which could affect performance.

Use only batteries, chargers, and other accessories approved by HMD Global for use with this device. Do not connect incompatible products.

To prevent possible hearing damage, do not listen at high volume levels for long periods.