This item is less than a month old since opening. It has been used once to confirm its functionality. Functionality has been confirmed, with no issues. It is practically a new product. Product description site → https://www.mi.com/jp/product/redmi-buds-6-pro/ Redmi Buds 6 Pro in gray, featuring Bluetooth connectivity and noise-canceling function. - Model Name: Redmi Buds 6 Pro - Color: Gray - Included items: Charging case, instruction manual - Features: Bluetooth connectivity, noise-canceling function Thank you for viewing. #xiaomi #Redmi #earphones #wireless earphones