The most common cause of headphones' trouble is “disconnection of the cable”, which we do not have to worry at all. Without the cables, it is more comfortable to use for exercising such as jogging. “Pairing” function to prevent from interferences, With the “pairing” function, the headphone and the transmitter does matching. Even if other wireless headphones are near you, there will be no interferences at all. On the other hand, it allows usage of Multiple pairs of headphones for audio reception. You can share music with others. Low Power Consumption Headphone, The transmitter can be used for more than 6 hours continuously by recharging with USB cables. The headphone can be used for more than 20 hours continuously with two AAA batteries.High quality sound and long distance reach with 2.4GHz frequency, Unlike Bluetooth, it can transmit the audio data with high quality. Therefore the quality does not drop although it is wireless. Moreover, it has longer effective reception distance than Bluetooth.Convenient with many useful functions, The headphone itself has a volume controller on the right side. There is no need to adjust the volume of the original sound. With the auto-sleep function, the power will be off if it is not used for 10 minutes. The battery will be saved even if you forget to switch it off.