【Industry-Leading Bluetooth 5.3 Technology & Auto-Pairing】These wireless earphones utilize the cutting-edge Bluetooth 5.3 chip, significantly improving data transfer speed and connection stability. Compared to the previous generation Bluetooth 5.0 chip, power efficiency and connection stability are dramatically enhanced. Compatibility with iOS, Android, and Windows smartphones and tablets is improved, greatly reducing issues like connection delays, sound skipping, and dropouts in crowded places such as busy streets, stations, and trains. Once successfully connected, the earphones will automatically pair with your smartphone simply by taking them out of the charging case. 【Type-C Fast Charging & Long Playback】These Bluetooth earphones are ultra-lightweight and equipped with innovative power-saving technology and a high-performance battery, allowing for approximately 5 hours of continuous playback on a single full charge, letting you enjoy music and calls. With the charging case, you can enjoy up to 25 hours of playback, eliminating the worry of running out of battery throughout the day. The Type-C charging port supports fast charging, significantly speeding up charging compared to Micro USB, and greatly reducing charging time. (※ Playback time may vary depending on volume, content played, and usage environment). 【CVC8.0 Noise Cancellation & Hi-Fi High-Quality Sound】Built-in high-sensitivity microphones and innovative CVC 8.0 noise cancellation technology eliminate ambient noise and emphasize the caller's voice, improving call quality and delivering clear voices to the other party. These are the most suitable Bluetooth earphones for online classes, Zoom meetings, and business calls. Furthermore, they support the AAC high-quality music format and are equipped with specially designed 13mm titanium-plated composite diaphragm speakers, allowing for near-perfect reproduction of every detail in the music. The sound is crisp and clear, delivering well-defined music. 【Excellent Fit & Single/Dual Ear Switching】The ergonomic design fits the shape of the ear perfectly, providing a comfortable fit and size, without putting any burden on the ears. These are feather-light in-ear earphones that feel weightless even when worn.