【Comfortable Fit Wireless Earphones】Small and delicate, extremely compact and convenient to carry. They fit snugly in your ears and do not cause discomfort or pressure. They won't easily fall out even with prolonged use, and ear fatigue is reduced. *40dB noise reduction is effective for low-frequency noise in environments with engine noise. Not all noise is canceled out. 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 (about 4 grams). 【IPX7 Waterproof Performance】These fully wireless earphones achieve high waterproof performance, allowing you to use them with confidence during sports such as gym workouts, running, and fitness, even on rainy days. *Note: The charging case is not waterproof. If you have any problems with the product, please contact our store via your order history. Contact method: "Account Service" > "Order History" > "Seller" > "Ask a question". 【Battery Level Display & Long Music Playback】The LED display allows you to easily check the remaining charge of the charging case and earphones. It's clear at a glance, and you don't need to guess the amount of power left in the earphones. Note: When you put the earphones back in the charging case, they will charge automatically, and the LED display will flash while charging. When the earphones are fully charged, the LED display light on the earphone case will automatically turn off. From a fully charged state, the earphones can provide up to approximately 6 hours of continuous calls or music playback. The earphone case can charge the earphones about 5 times on a full charge, allowing for a total of approximately 36 hours of music playback. (*Playback time may vary depending on volume, content being played, and usage environment.) 【Instant Automatic Pairing & Excellent Compatibility】Bluetooth 5.3 has low latency, long range, and high interference resistance. Battery life and range are dramatically improved, minimizing sound skipping, interruptions, delays, and noise, and achieving stable communication. Compatibility with iOS, Android, Windows, and tablets has also been improved. Instant pairing steps: ① Take out the earphones. ② Turn on BLUETOOTH. ③ Automatic pairing. After the first pairing, on the second use, you can open the lid and automatically connect to your phone.