Brand new, unused item. Bubble wrap packaging, free shipping. Japanese instruction manual. Reliable and safe RoHS FC CE certification. 1020 【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 and click to connect. No need to take the Bluetooth earphones out. After connecting manually for the first time, when you start them again, they will automatically power on and connect with just one step when you open the lid. We will provide a more comfortable user experience than other earphones of 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 being played, and usage environment). Also, a clear LED display is designed so you can check the charging status of the 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, Yet Fits Comfortably in the Ear】These wireless earphones maintain the same compact size as before while achieving significant functional additions and improved sound quality. You can hear the details of musical instruments, so you can enjoy the mid and high frequencies dynamically along with the bass. Especially at 50% volume, you can feel the depth and impact of the bass. This provides a high-quality call experience. Perfect for online courses and meetings! Enjoy a clear call experience you've never had before. 【With Touch Sensor - Easy Operation - Excellent Fit】With one touch, you can easily control music playback/pause/skip forward/skip back/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, Safe Water Resistance】With IPX7 waterproof performance, it is splash-proof and resistant to sweat and water, so you can use it with peace of mind even if it gets wet from sudden rain or sweat from intense exercise. Applicable to all weather conditions.