Brand new, unused item. Bubble wrap packaging, free shipping. Japanese instruction manual included. Reliable and safe with RoHS, FC, and CE certifications. 1001 【Industry-Leading Bluetooth 5.3 Technology & Automatic Connection Upon Opening】The "M52-ENC" Bluetooth earphones utilize a hall switch. When connecting for the first time, simply open the charging case and search for "M52-ENC" in your smartphone's Bluetooth settings and click to connect. No need to take the earphones out. After the initial manual connection, the earphones will automatically power on and connect when you open the lid again, requiring only one step. This provides a more comfortable user experience than other earphones with the same specifications. 【Up to 45 Hours of Playtime & 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 (playtime varies depending on volume, content, 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 their compact size while significantly improving functionality and sound quality. You can hear the details of musical instruments, allowing you to enjoy both 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, and 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 can do everything with a single finger without taking out your smartphone, even when you're busy with online meetings, driving, housework, or package deliveries. 【Fast Type-C Charging & Waterproof for Peace of Mind】Featuring 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. Suitable for all weather conditions.