Introducing our new Bluetooth 5.1 earphones with individual power display for both earbuds and the charging case. The intelligent LED display shows the remaining battery life for both the charging base and the earbuds. With up to 90 hours of playtime, these earphones can play for 4 hours on a single charge, and the built-in 2000mAh rechargeable battery charging case provides 90 hours of additional playback time. The latest Bluetooth 5.1 technology allows for easy and fast pairing, and the ergonomic design ensures a comfortable fit for an active lifestyle. The earphones come with three adjustable ear cup sizes and are IPX6 waterproof, perfect for fitness, travel and more. These earphones are compatible with all Bluetooth-enabled devices and mobile phones. Note that the charging case is not waterproof.