Please note that this item will be shipped without the box. The ear tips are new, except for the ones already attached. Functionality has been confirmed. The outer case and charging cord may have minor, barely noticeable stains as shown in the images. Functionality has been confirmed. Please only purchase if you are familiar with connection operations and can troubleshoot any issues yourself by researching on YouTube or the official website. We do not know the device the buyer will be connecting to, so we cannot provide instructions or support for operation. Clear Voice Calls The microphone equipped with cVc8.0 noise cancellation removes surrounding noise, allowing the person on the other end of the call to hear your voice more clearly and loudly. Qualcomm aptX audio support delivers high-quality sound like a CD source. (※Only for devices supporting Qualcomm aptX audio) Up to 28 Hours of Playback Time The earphones themselves can play music for up to 7 hours on a full charge. Using the included charging case, you can get up to 28 hours of continuous playback (※Playback time may vary depending on volume, content being played, and usage environment). Also, a 10-minute charge allows for approximately 2 hours of music playback. Wireless Charging Supported The earphones can be used individually. When using mono mode, be sure to return the other earphone to the charging case. ※Closing the charging case cover will disconnect the earphone returned to the case. ※The music being played may temporarily pause when switching to mono mode. Charging Port: USB Type-C Waterproof wireless earphones with up to 28 hours of playback and noise-canceling function.