The sound quality of the Neckband Pro is tuned based on extensive user experiences and is at a relatively high industry standard. However, individual preferences for sound quality may vary. We recommend downloading the Nothing X App and accessing the Equalizer page to choose preset sound effects. Additionally, you can customise the sound according to your personal preferences in the Custom settings.

1) If the earbuds were playing sound from the meeting, the issue might be due to the settings of the web conferencing program. When selecting the Necklace Pro channel in the web conferencing program, it periodically forces the sound route to switch to the earbuds. As a result, when you are connected to a meeting on Device A and receive a call on Device B, the earbuds continue to output sound from the meeting and cannot switch to the mobile phone call.
Solution: Change the audio channel in the web conferencing app to the system default.
2) If there was no sound playing from the web conferencing application on the computer through the earbuds, reset the earbuds to factory settings and then reconnect them, or try restarting the mobile device and attempting again.

1. Open the Settings app on your phone, go to the Bluetooth interface, check if the earphones are listed under the connected devices. If they are on the connected devices list, click on the i button next to the earphones and select Forget this device.
2. Re-enter the Nothing X app and initiate the pairing process again.

The device search is an interactive process between the phone and the earphones, so there may be Bluetooth logic issues on the phone side, causing the earphones to stay undetected for some time. This is not a problem with the earphones. Try turning the Bluetooth on your phone on and off, or restarting the phone and trying the search again.

This is normal. When connected to an iOS device, the Bluetooth connection through the app uses the BLE (Bluetooth Low Energy) protocol. The earphones and the app establish a connection via low-power Bluetooth. During a call, the system prioritises processing power and communication bandwidth for the call as priority. Consequently, the communication over low-power Bluetooth is halted.

Due to compatibility issues with the Bluetooth Fast Pair and dual connection features of some device systems, there may be occasional delays in sound output when you switch music channels or try to connect your device. We recommend you directly experience the connection between the earphones and the device.

The Neckband Pro doesn't support wireless charging. Please charge the earphones with a Type-C cable.

With a 10-minute charge, the earphones play music back continuously for 18 hours. With ANC turned on, the earphones provide 11 hours of continuous music playback.

Test conditions: Music playback in AAC mode at 50% volume. Charging and battery tests are based on experiments conducted by Nothing (at a temperature of 25°C or 77°F). Actual battery life is influenced by factors such as volume, frequency, output source, environmental interference, product features and user habits. Actual experience will depend on individual usage.

When in music mode with ANC mode turned off, the earphones play music back for up to 37 hours.
When in music mode with ANC/transparency mode turned on, the earphones play music back for up to 23 hours.
When in music mode with Transparency Mode on, the earphones play music back for up to 22 hours.
When in call mode with ANC turned off, the earphones can be used continuously for up to 20.5 hours.
When in call mode with ANC turned on, the earphones can be used continuously for up to 18.5 hours.
When in call mode with Transparency Mode on, the earphones can be used continuously for up to 19 hours.

Testing conditions: AAC mode, music playback at 50% volume. Charging and battery tests are based on testing conducted by Nothing (at a temperature of 25°C or 77°F). Actual battery life depends on factors such as volume, frequency, output source, environmental interference, product features and usage habits. Actual experience will vary based on individual usage.

The Necklace Pro's default control settings do not include waking up the voice assistant. To enable it, enter the Control section in the Nothing X app, choose to set gestures like Double Press or Triple Press to trigger the voice assistant. Once enabled, the voice assistant can get activated on demand.

For additional features, please download the Nothing X App from Google Play or the iOS App Store.

1. When the earphones are connected to two mobile devices, and neither device is in a call state:
a) The earphones will output the ringing sound from the device that's receiving a call.
2. When the earphones are connected to two mobile devices and one of the devices is already in a call:
a) If a call comes in on the non-calling mobile device, the earphones will play the incoming call alert, and the earphone buttons will prioritise controlling the incoming call device. If the earphones hang up the current call, the audio channel will switch to the incoming call on the other device.

Note: Please refer to the product instructions on the official CMF website or get in touch with our Customer Support.

1. When the earphones are connected to two devices, and both devices are in an idle state:
a) The earphones will output the ringing sound from the device that's receiving a call.
b) If one device starts playing music first, the earphones will output the sound of the corresponding phone.

2. When the earphones are connected to two devices, and only one device is in the music-playing state:
a) Incoming or outgoing calls on the device that is not playing music will mute the current music on the earphones (without pausing) and switch to the sound of the incoming or outgoing device. After the call is ended, it will switch back to the connected device playing music.
b) There is no sound channel switching if the device not playing music starts playing music. Both devices will remain in the playing state, and the device that started playing music later will be in a muted state.