Class 1 devices have a maximum of 100 mW, class 2 maxes out at 2.5 mW and class 3 tops out at just 1 mW. 1 is a free software that allows us communication between our computer and others bluetooth devices. Billionton Bluetooth Class 2 Drivers For Macbook Airīillionton Bluetooth Class 2 Drivers For Macbook Airīluetooth Class 1 Billionton Software WIDCOMM Bluetooth v.6.2.1.100 WIDCOMM BLUETOOTH 6.