Bluetooth version : 5.1 Available system: iOS/Android Operation range: 10 m Talk time: approx .3.5hr Music time: 5hr/6hr (ANC ON/OFF) Bluetooth profles: HFP/HSP/A2DP/AVRCP Battery capacity(case): 380 mAh Top-ups by case: 3(for both earbuds) Charging port: Type-C