New item. Price is negotiable, so please comment if you're interested! 【Comfortable Fit Wireless Earphones】Small and delicate, extremely compact and convenient to carry. They fit snugly in your ears and won't cause discomfort or pressure. They won't easily fall out even after long hours of use, and ear fatigue is reduced. *40dB noise reduction is effective for low-frequency noise in environments with engine noise. Not all noise is eliminated. They can be easily stored in your bag when you go out and won't get in the way at all. The ergonomically designed earphones are very compact and lightweight (approx. 3.2 grams). 【Ultra-Long 50H Standby】These Bluetooth earphones have a large-capacity battery and are designed for energy saving, allowing for 5 hours of music playback on a single full charge. With a small and easy-to-carry charging case of only about 25g, you don't have to worry about running out of battery even if you use the earphones for a long time. The charging case is small enough to fit in the palm of your hand, so you can put it in your pocket when you go out, and it won't get in the way wherever you carry it. 【Latest Bluetooth 6.0 and High-Fidelity Sound Quality】These wireless earphones feature advanced Bluetooth 6.0 technology, providing fast and stable transmission within a 15m Bluetooth range. The built-in high-quality audio chip captures every detail of the music, delivering clear highs and rich sound with moderate bass. They also achieve Hi-Fi sound quality for clear Bluetooth earphones. These features allow users to enjoy an excellent acoustic experience. 【IPX7 Waterproof Performance】These fully wireless earphones achieve high waterproof performance, allowing you to use them with peace of mind during sports such as gym, running, and fitness, even on rainy days. *Note: The charging case is not waterproof. 【Ergonomic Design】These Bluetooth earphones are designed based on human ergonomics and fit perfectly to the natural shape of the ear. They are comfortable even after long hours of use, without any pressure, and stay securely in place during sports, so you don't have to worry about them falling out. You can use them with confidence during intense movements such as running, cycling, and high-intensity training at the gym. The lightweight and soft ear tips provide comfort even after long hours of use, allowing you to enjoy music and calls freely.