100% authentic Very light use And its sound is very clear Price is negotiable Bluetooth version: V5.4 Battery: 25 mAh 2 x earbuds, 250 mAh charging case Talk time: 4 hours at 70% volume Music playback time: 5 hours at 70% volume Frequency: 20 Hz - 20 kHz Charging time: 1.5 hours Standby time: 180 days Charging port: USB-C Transmission distance: more than 10 meters Impedance: 32 Ohms Water resistance: IPX4 Charging voltage: 5V DC Driver unit: 13 mm