Brand new, unused item. Bubble wrap packaging, free shipping. Japanese instruction manual included. RoHS, FC, and CE certified for safety and peace of mind. 1005 【Industry-Leading Bluetooth 5.3 Technology - Automatic Connection When the Lid is Opened】The "M52-ENC" Bluetooth earphones use a hall switch. When connecting for the first time, open the charging case of the earphones and search for "M52-ENC" in your smartphone's Bluetooth settings, then click to connect. There's no need to take the earphones out. After connecting manually for the first time, the earphones will automatically power on and connect with just one step when you open the lid again. This provides a more comfortable user experience than other earphones with the same specifications. 【Up to 45 Hours of Playback - Clear LED Display】With a 500mAh large-capacity battery and an energy-saving design, the earphones can play for 6 hours on a single charge, and up to 45 hours with the charging case (playback time varies depending on volume, content being played, and usage environment). The design also includes an easy-to-read LED display that shows the charging status of both left and right earphones, as well as the remaining charge of the charging case, clearly displayed from 1% to 100%. 【High-Quality Sound Equivalent to ENC Noise Cancellation, Comfortable Fit】These wireless earphones maintain the same compact size as before while significantly improving functionality and sound quality. You can hear the details of musical instruments, allowing you to enjoy both mid-range, high-range, and low-range sounds dynamically. You can especially feel the depth and impact of the bass at 50% volume. This provides a high-quality calling experience. Perfect for online courses and meetings! Enjoy a clear call experience like never before. 【Touch Sensor, Easy Operation, Excellent Fit】With a single touch, you can easily control music playback/pause/skip forward/skip backward/answer/reject calls/SIRI (voice guidance), etc. You don't need to take out your smartphone even when you're busy with online meetings, driving, housework, or package delivery; everything can be done with a single touch. 【Fast Type-C Charging, Waterproof for Peace of Mind】With IPX7 waterproof performance, these earphones are splash-proof and sweat-resistant, so you can use them with confidence even in sudden rain or sweat from intense exercise. They are suitable for all weather conditions.