E4 Pro - User guide - Connectivity & Pairing

Sudio E4 Pro enters pairing mode immediately when opening the lid on the charging case. When pairing E4 Pro for the first time, you hear 🔈 On followed by 🔈 Ready to pair, find your Sudio product in the Bluetooth list of your device.

⚠️  Sudio E4 Pro is delivered with a red protective film covering the charging connectors between the earbuds and charging case. The film needs to be removed in order for the earbuds to power on.
 

Pairing E4 Pro with a device

1. Remove the E4 Pro earbuds from the charging case and fit them inside your ears.
2. Go into the Bluetooth settings on your device. The E4 Pro earbud LED lights are flashing white while scanning for available devices. 
   • For iOS (iPhone), go to the Settings app and select Bluetooth.
   • For Android, go to the Settings app, then select Connections followed by Bluetooth.
   • For Windows 11, click on the Start button, select Settings followed by Devices, and then Bluetooth and other devices.
   • For macOS, go to the System Preferences app and select Bluetooth.
3. Locate and select Sudio E4 Pro in the Bluetooth list on your device.
4. When paired you will hear the audio feedback 🔈 Connected.

If E4 Pro has previously been paired with your preferred device, simply remove the earbuds from the charging case and they will automatically connect, so long as Bluetooth is activated on the device and E4 Pro has not been paired with a different device more recently. 
 

Device compatibility

E4 Pro uses Bluetooth version 6 which is compatible with a wide range of Bluetooth devices. The paired device does not need to be the same version, but similar versions are more likely to maintain a strong connection. 
 

Signal interference

Some wireless devices may interfere with each others' signals, such as WiFi-routers, smartwatches, other Bluetooth devices, etc. If they operate within the same frequency, you may experience interference such as dropped sound and glitching. The easiest way to locate the cause of interference is by maintaining one connection between devices at the same time or take your E4 Pro and connected device outdoors to see if the interference clears.

E4 Pro can be up to a maximum of 15 meters (49.2 ft) from the paired device, but the connection may break if they are blocked by walls or similar objects.