HONOR Earbuds X3 Lite: AAC/SBC Bluetooth codec, Bluetooth version 5.3 USB Type-C charging port, 45mAh Typ battery capacity for earbuds and 500mAh Typ battery capacity for charging case IPX4 is the water resistance rating. Size of single ear: 33.8 x 17.7 x 15.8 mm Measurements: 64.7 x 52.9 x 27 mm