The Xiaomi Bluetooth Earphones are IPX4 certified waterproof. These Xiaomi earphones can be fully charged in 2 hours. Discover the much-needed convenience and remastered quality with the Xiaomi Wireless Bluetooth 4.1 Music Sport Earbuds. They deliver full spectrum quality music, regardless of the genre. The ear-hook, and anti-drop design make these earphones the perfect accessory for an active lifestyle. The Music Sport Earbuds are compatible with all Bluetooth 4.1 devices including IOS and Android tablets and phones.