Bluetooth version: 5.0 Ear tip material: Silicon Driver size (mm): 8 Dynamic frequency response range (Hz): 20 Hz – 20 kHz Impedance (ohms): 16 Number of drivers per ear: 1 Charging Case Weight (g): 36.1 Earpiece Weight (g): 10.2 Bluetooth profiles: A2DP 1.3, AVRCP 1.6, HFP 1.7 Bluetooth frequency: 2.4 GHz – 2.4835 GHz Charging time (hours from empty): 2 Maximum Play Time (hours): 5 Bluetooth: Yes Charging cable: Yes Remote control on ear cups: Yes Voice Assistant integration: Yes Built-in Microphone: Yes Charging case: Yes Hands Free Call: Yes Rechargeable battery: Yes True Wireless: Yes