Bluetooth V5.3 Bluetooth Protocol A2DP, AVRCP, HFP Playtime (hours) ANC On: 7h (earbuds)+14h (charging case) ANC Off: 8.5h (earbuds)+17h (charging case) Charging Port USB-C (Type-C) Input 5V/200mA (earbuds) 5V/1A (charging case) Audio Coding SBC Driver Φ6mm Dynamic+Φ10mm Dynamic Frequency Response 20Hz-20kHz Output Sound Pressure Level 92dB±3dSPL (A) IP Rating IP55