New, unused item. Bubble wrap packaging, free shipping. Japanese instruction manual. Reliable and safe RoHS FC CE certification. 1003 【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 again, the power turns on automatically when you open the lid, and it connects automatically in just one step. 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 alone can play for 6 hours on a full 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 While Fitting 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-high and low frequencies dynamically. Especially at 50% volume, you can feel the depth and power of the bass. This provides a high-quality call experience. Perfect for online courses and meetings! Enjoy clear calls like you've never experienced before. 【Touch Sensor - Easy Operation - Excellent Fit】With a single touch, you can easily control music playback/pause/skip forward/skip back/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, 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. Applicable to all weather conditions.