Bluetooth version: 5.2Ear tip material: SiliconDriver size (mm): 10Driver sensitivity at 1kHz/1mW (dB)": 103Dynamic frequency response range (Hz): 20 Hz – 20 kHzImpedance (ohms):32Number of drivers per ear: 1Charging Case Weight (oz): 1.4Earpiece Weight (oz): 0.4Charging Case Weight (g): 40.4Earpiece Weight (g): 11.4Bluetooth profiles: A2DP V1.3, AVRCP V1.6, HFP V1.7Bluetooth frequency: 2.4 GHz – 2.4835 GHzBluetooth transmitted modulation: GFSK, π/4-DQPSK, 8-DPSKBluetooth transmitter power: 0 - 12dbmMaximum music play time with ANC on (hours): 8Maximum Play Time (hours): 10