Advanced Bluetooth 5.2 More stable and faster transmission, lower power consumption, greatly improving the problems of interruptions. Up to 18 hours battery life A single charge brings you up to 5 hours of listening time? and up to 18 hours when coupled with the charging case. Low Latency Enabling low latency mode to reduce the latency of Bluetooth transmission and ensure sound synchronization when playing games. IP54 waterproof With IP54 dust and water resistance, The Redmi Buds 3 Lite can accompany you through heavy wind, rain, and workouts alike. Automatic connection Redmi Buds 3 Lite will automatically connect to your smart devices after the first pairing process. Just took the earbuds out from the charging case to enjoy music. A Perfect Fit Redmi Buds 3 Lite is designed with an ergonomic structure to fit snuggly into your ears for a secure, comfortable fit.