Delivery very fast. Audio quality is good, almost like the original signal, faint noise but does not interfere when music is playing. Connect to matching transmitter goes well. Watch out if other Blurtooth transmitter is still on (for example) tablet, then he does not connect automatically to the transmitter by TaoTronics. Connection stable for 5-6, while visual contact is there. Coupled with Samsung S3, Samsung Tablet, Aldi BT Earphones.