Bluetooth 2.1 plus EDR. Supports HFP, HSP, A2DP and AVRCP profiles. Operation range of 10 meters. 40mm 3W driver. 400mAh Li-ion battery offers approximately 4.5 hours of talk time, approximately 3 hours of music playback and up to 165 hours of standby. Charges in 3 hours. Answer, end, reject calls. Listen to music with volume adjustment, previous/next/pause functions. TF card playback support.