You can find the complete Bluetooth specifications listed here.īluetooth 2.0+EDR is a common specification for laptop computers. Bluetooth hosts can specify maximum transmit and receive latencies so that low-power devices can know how often they must exit and re-enter 'sniff mode.' This can result in up to five times the battery life experienced by older low-power Bluetooth devices. Version 2 also allows multiple Bluetooth connections at the same time.Ī feature called Sniff Subrating extends battery life by reducing the active duty cycle of Bluetooth devices like keyboards and mice to improve battery life. In version 2, a Bluetooth device will make a connection automatically and all the end user has to do is confirm the connection. Connecting, which is called 'pairing' is easier than in previous versions. Answer (1 of 5): A2A, I will not refer technology on this question, but base my answer on my own experience: A USB 3 Dongle will work faster then a USB 2 dongle, irrespective of the port type ( USB 2 or USB 3).

Version 2.1+EDR is built to be more secure and make man-in-the-middle (eavesdropping) attacks more difficult. The product that we have chosen are affordable and can be bought online from amazon.

Fortunately, you have come to the right place as we will be guiding you in your search for the best bluetooth audio dongle available in the market. Bluetooth 2.0+EDR and Bluetooth 2.1+EDR are specifications for short-range wireless data exchange. Both Version 2.0 and 2.1 support EDR (Enhanced Data Rate), a faster PSK modulation scheme capable of transmitting data 2 or 3 times faster than previous versions of Bluetooth. Buying a good quality bluetooth audio dongle needs a lot of research and patience.

Is bluetooth dongle 2.0 good for audio