Battery life is always an issue with continuous investigation. Using USB as a power source, UB-40 helps users to accomplish their purposes without worrying about battery.
The other pro is that the UB-40 is fully functional as a USB2.0 cable. It means that a transmitter can be set as a replacement for an connecting cable of ordinary USB devices such as printer, CD drive or external hard drive.
If there is no peripherals arround, simply plug UB-40 to a computer and put the other end wherever you want and it still works as a battery-less transmitter. All you need is an available USB port of a computer that is turned on and running.

-FEATURE-

1. Continuous power supply(depending on computer.)

2. Easy installation.