soundcore by Anker Liberty 4 NC Wireless Noise Cancelling Earbuds, 98.5% Noise Reduction, Adaptive Noise Cancelling to Ears and Environment, Hi-Res Sound, 50H Battery, Wireless Charging, Bluetooth 5.3

Product Information

If the earbuds are not worn properly in your ears, you may not experience the best bass performance. Ensure that the ear tips are not blocking the charging pins on the earbuds and in the charging case. If one earbud feels stable and the other does not, try a combination of ear tips such as medium in the left and large in the right. For clarity, I often carry a pair of very basic wired earphones around with me (they get the jo

When the charging case is fully charged, all the white lights will stay on for 5 minutes and then go out. When using both earbuds for the first time, select Adaptive Noise Cancelling, so that the most appropriate noise reduction parameters will be selected according to your ear canals.Note: Battery playtime is obtained from testing in the Anker laboratory using the earbuds' default settings, in normal mode, and 50% volume. When you place the left and right earbuds in the charging case, there will be white LED indicators which confirms the earbuds are properly connected with the charging case. The 4s functionality however is top notch and if the fit was tighter the sound might be up to the 2s quality.

If you take the earbuds out of the charging case and don't wear them or connect them to any device, they will turn off within 30 minutes. I have only used these on my commute and on my daily walk and I haven't used them when running or high movement so I can't say if they're good at staying in the ear no matter what, but for what I need then they've been great. When you place the left and right earbuds in the charging case, there will be white LED indicators that confirm the earbuds are properly connected to the charging case. Take the Fit Test on the soundcore app to check if you're wearing the earbuds in the perfect position.Make sure the Bluetooth device and earbuds are within Bluetooth range, and there is no signal interference between them. It's important to note that there may be a slight delay when using Bluetooth headphones, which is a common limitation of Bluetooth technology. You will hear a pairing prompt tone, indicating that the earbuds have entered multipoint pairing status. Replace the ear tips with ones that fit more snugly in your ears and ensure that you are wearing the earbuds in the correct position to create a tight seal.

Make sure your hands are clean and dry, and you touching the touch control area (soundcore logo) precisely. However, it's worth mentioning that the delay can be influenced by various factors such as the Bluetooth headphones themselves, the connected device, the audio source, the specific application being used, and even the network conditions. When the battery of the charging case is at 0-20%, the light in the middle of the charging case will turn red for 5 seconds and then go out. If you still can't connect using the steps above, provide the mobile phone model, app version, screenshots in Step 5, mobile phone system region, and language settings.

When the battery of the charging case is lower than 60%, the light in the middle of the charging case will turn white for 5 seconds and then go out. Try testing your earbuds with a different Bluetooth device in a different environment to see if there is any difference. If the indicators in the charging case don't light up, please check whether the charging case and earbuds are properly connected, have enough power, and you can also clean the charging pins with a dry cloth. Bluetooth signals may be influenced by obstructions, such as walls, pillars, home appliances, Wi-Fi, and more. When resetting the earbuds, make sure the earbuds are well connected with the charging case, or it may cause the reset to fail.