Brand new, unused item. Bubble wrap packaging, free shipping. Japanese instruction manual included. Reliable and safe with RoHS, FC, and CE certifications. 1010 【Industry-Leading Bluetooth 5.3 Technology - Automatic Connection Upon Opening】 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. You don't need to take the earphones out. After connecting manually for the first time, they will automatically power on and connect with just one step: opening the lid. 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 alone can play for 6 hours on a full charge, and up to 45 hours with the charging case (playback time varies depending on volume, content being played, and usage environment). A clear LED display is also designed to show the charging status of both left and right earphones, and the remaining charge of the charging case is clearly displayed in numbers 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 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 clear calls 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, Worry-Free Water Resistance】 Equipped with IPX7 waterproof performance, it is splash-proof and sweat-resistant, so you can use it with confidence even if it gets wet from sudden rain or sweat from intense exercise. Suitable for all weather conditions.