Wireless 3D surround headset

Energy exchange mode: moving coil type
Bluetooth version: Bluetooth 4.1
Frequency range: 2.4ghz-248ghz
Working range: up to 10 m (barrier free space)
Support protocols: A2DP, auforcp, HSP, HFP
Frequency response: 5-25000hz
Distortion: 0.3% ~ 3% (THD)
Sensitivity: 120dB
Audio analysis: up to 24Bit@48KHz
Bluetooth music time: up to 25 hours
Talk time: up to 28 hours
Standby time: up to 1300 hours