Hello Kitty Wireless Earbuds with Charging Case - Built-In Mic, Easy Pairing, Bluetooth 5.0, Long Battery Life, and Superior Sound Quality - Perfect for Music, Calls, and Gaming - Stylish and Portable Design Talk & Playtime: 8 hrs * Varies depending on settings and usage Bluetooth Version: V 5.0 Bluetooth Range: 33ft Speaker Driver Size: 10mm Earbud Battery: 30 mAh Charging Case Battery: 150 mAh.