Bluetooth version: V5.0, Effective distance: 10m, Playback time: Noise-cancellation on: 7+18h; Noise-cancellation off: 9+23h, Battery capacity: 60mAh (earbuds); 500mAh (charging case), Frequency response: 20Hz-20KHz, Sound pressure level: 94±3dB, Impedance: 24 Ohm, Audio codecs: SBC, Charging time: about 1 hour (earbuds); 2 hours (charging case), Charging port: USB Type-C. For Hybrid Noise Cancellation, the internal and external 2-way MICs precisely capture and reverse the noise, keeping away any disturbance from the outside.