Jh-8078c1 2.4g wireless headphone Jh-8078c1 wireless headphone is specially designed for tv, mp4, ipod, pc and any other audio/video devices users who pursue high quality stereo crystal clear sound without disturbing others or considering the limitation of connection cables, it adopt pll technology to make sure the transmitting and receiving more reliable and stable. It's transmission frequency is 2.4ghz and it's transmission distance can reach 100 meters. The whole item is composed of a transmitter, a receiver and an ac adapter. For the power of transmitter, we use an ac adapter and for the receiver, we use three rechargeable aaa batteries(not included in our item). Please note that our receiver has rechargeable function, just plug the ac adapter in the charging jack of the receiver, the rechargeable batteries mounted in will be charged. 1.Stereo wireless listening 2. 2.4ghz 3. Preset 3 channels to avoid interference from other transmission sources 4. Rechargeable function 5.Suitable for global markets Colorful paper box