Anker SoundCore Liberty 4 NC, black, right ear only. Touch operation, noise canceling, external sound capture, charging, etc. have been tested and confirmed to be working. Regardless of the condition, it has been thoroughly cleaned with alcohol, etc. It's in good condition with few scratches. Battery life is good. Please be sure to initialize it with your existing earphones before use. Free shipping. Anonymous shipping is planned. Immediate purchase is welcome. There are no smokers or pets in my household, including myself. Type...Canal type Connection type...Wireless Features...Bluetooth, noise canceling Anker Soundcore Liberty Four Black BLACK Bluetooth Bluetooth right side one side one ear one side genuine product genuine product complete full wireless earphones earphone light right right earphone battery noise canceling external sound capture Other features: Noise canceling Other features: Noise canceling