【Shipping Method】 We will ship within 1-2 days, basically the next day after purchase. We will ship via the post office. The shipping method may vary depending on the product. Basically, we often use regular mail (regular mail does not have a tracking number). If you would like a different shipping method, please comment. ●Product Description● 【ANC】 Professional ANC technology suppresses 92% of low-frequency background noise in city streets, offices, airplanes, and noisy environments (Note: It is not 100% suppression. It cannot suppress human voices. You do not need to activate ANC in a quiet environment.) You can focus on what you want to hear and enjoy music, movies, and videos. The noise cancellation function works in both wired and wireless modes. 【40 Hours Playback & Fast Charging】 The built-in 750mAH energy-efficient long-life battery allows you to enjoy your own world without background noise for up to 40 hours or more, and you can use a 3.5mm audio cable as a backup when the battery is low. The cutting-edge fast charging function provides more than 2 hours of playback with just 5 minutes of charging, and a full charge in 1-2 hours. 【Bluetooth and Hi-Fi Sound】 Stable BT5.0 with NFC and low latency for fast connection and lossless audio sound. Two powerful HD stereo 40mm large-diameter drivers deliver deep bass, clear vocals, and high-fidelity stereo sound, creating an immersive music environment. Enjoy high-quality sound and beat with your soul. 【Hands-free Calling and Built-in Microphone】 The NC75 Pro is processed immediately without waiting. The internal noise-canceling microphone makes it easy to pick up incoming calls with clear voice. Supports Siri voice control. Y117