Bluetooth version: V5.0&built in microphone
Driver unit: Φ40mm
Impedance: 32Ω
Receiver distance: Up to 10 meters
Frequency response: 20Hz-20kHz
Battery voltage: 3.7v 250mAh
Charging time: about 2 hours
Music time: Up to 8 hours
Talk time: Up to 8 hours