There are 3 options for transmission channel on the Zensonic transmitter base station and you can tune multiple headsets to the same base station - handy for late night TV. The included batteries are 2x AAA NiMH and they are recharged by plugging the headphones into a cable on the transmitter base station. There are indicator LEDs on the transmitter to let you know when the batteries are fully charged. I seem to get about 12 hours of continuous use before the batteries run down.



Link: OCAU