What device dose it compatible with?

It is compatible with any audio devices that has Bluetooth feature (e.g. your cellphone) or has 3.5mm AUX port/plug (e.g. your TV, stereos, speaker...

Is there a way to transmit while charging?

Yes it can transmitter while charging. You can charge it by simply plugging in the Micro USB port.

Can two of these devices pair each other?

Yes, they can pair each other automatically. Please turn one device to TX mode, and turn the other to RX mode.

Is this device NFC enabled ?

No, the device does not support NFC.

How long is the transmitting range of this product?

The transmitting range is about 10 meters (33 feet).

How can I program this product?

This product is not programmable, however, there might be third party software that can program Plug & Play product like this one, so please se...

Does this product require driver / Where can I find the driver of this product?

This product is Plug & Play, it means once you plug in the product, it will be installed on your computer automatically, so you don't need a d...