Wireless earbuds equipped with four microphones and noise reduction for clear calls. - Brand: soundcore - Model Name: Liberty Air 2 - Features: Noise reduction with four microphones - Bluetooth Version: Bluetooth compatible - Charging Case: Includes charging case Please note that there may be scratches and dirt on the main unit and case due to use. Please purchase only if you understand the condition. Operation has been confirmed, and pairing was smooth with no connection issues.