100% Authentic Very Light Use Price Negotiable Bluetooth Version: V5.4 Battery: 25mAh 2 x Earbuds, 250mAh Charging Case Talk Time: 4 Hours at 70% Volume Music Playback Time: 5 Hours at 70% Volume Frequency: 20Hz - 20KHz Charging Time: 1.5 Hours Standby Time: 180 Days Charging Port: USB-C Transmission Distance: >10 Meters Impedance: 32 Ohms Water Resistance: IPX4 Charging Voltage: DC 5V Driver Unit: 13mm