Brand new, unused item. Bubble wrap packaging, free shipping. Japanese instruction manual included. Reliable and safe, RoHS, FC, and CE certified. 1016 【Industry-Leading Bluetooth 5.3 Technology - Automatic Connection When 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, they 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 standard. 【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 (usage time varies depending on volume, content played, and usage environment). A clear LED display is also designed to show the charging status of the left and right earphones, and the remaining battery level of the charging case is clearly displayed from 1% to 100%. 【High-Quality Sound Equivalent to ENC Noise Cancellation, Comfortable Fit】 These wireless earphones maintain the same compact size while significantly improving functionality and sound quality. You can hear the details of musical instruments, allowing you to enjoy the mid-high and low frequencies 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., on the earphones. 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】 Equipped with IPX7 waterproof performance, it is splash-proof and sweat-resistant, so you can use it with peace of mind even if it gets wet from sudden rain or sweat from intense exercise. Suitable for all weather conditions.