wireless v3.0+EDR Frequency range 2.4-2.4835G CVCTMDSP Support FM Radio Support Micro SD/TF Card Support Sensistance 105_+3dB Power ToBear 30mW Microphone Support Sensitivity -58+3dB Life time >10hours Standby time >180hours Standby 0.5-0.6mA Battery Type 5v Battery Capacity 400mAH