As an alternative to using the built-in battery to operate your IrisVision, you can connect the headset to an external cell phone battery (not included) using the magnetic braided power cable connected to the power port on the headset (see below), This method is useful when you want to watch videos and television; it provides continuous power to the headset without draining the battery in the Display Unit.
NOTE: This method of powering the IrisVision may cause it to overheat. If it overheats, disconnect the cable and let the headset cool down.