... ,,Technology. Faster connections, better audio quality, Adaptive frequency hopping and improved interference rejection. Supports Bluetooth Advanced Audio Distribution (A2DP ... Control (AVRCP), Handsfree (HFP), and Headset profiles. ,Operating distance: 10m Range of frequency: 2.4 to 2.4835GHz ISM ... up to 10 hours (250 hours standby time) Echo and noise reduction technology. Dimensions (main body): 150 x ...