Note:1.All Batteries not included2.If no rechargeable battery is installed inside， the transmitter does not support charging function. The wall power adapter is not included in this package.Super eight function(6 in 1):1. Wireless frequency locking receiver; 2. Wireless chatting;3. wireless monitoring; 4. FM radio;5. Impressed bass sound; 6. Wire stero headphone;7. Charging; 8. Mute in week signal.Reception from any audio and visual equipment with audio out socket， such as TV set，audio device， DVD/VCD player， multimedia， PC， MP3， walkman， etc.Feature:Wireless frequency locking receiver:Wireless reception from any electrical multi-media device with audio output，Such as full-channel TV sound，PC，Game player， DVD ，VCD， audio device， MP3， MP4 etc.FM Radio:The headphone can be used as FM radio separately， search and focus channels automatically.Wireless chatting:A perfect audio-chat tool， enjoy surfing fun.Wireless Monitoring:Place the emitter near baby， old people and sick people who need care， The sound of the cared people can be heard with the receiver， for easy care.Wire stero headphone:Equipped with audio cable， the receiver can be used as a wired headphone.Mute in week signal:Use of the wireless headphone enables you to watch wonderful TV program with mute function.Impressed bass sound:When the emitter is turned on， press the bass button for 3 seconds to enter the bass mode(bass function is turned off by default). The intensity of the sound will increase 8-10db under the bass mode. Impressed Bass sound for great enjoyment!Charging function:The Transmitter can charge the Rechargeable AAA Battery， please install the Rechargeable Battery inside the transmitter and switch the button to "OFF" position， then connect the Wall Power Adapter(4.5~5V)Frequency: 86 +/- 0.5MHz.Power supply: 2 x AAA batteries.Frequency range: 87.6 - 108MHz.Reception Mode: FM.Distortion: <1%.Receiver Power supply: 2 x AAA batteries( All Batteries not included ).Package:1 x emitter ( Original packaging )1 x receiver(headphone).1 x instruction manual.2 x audio cable1 x Audio adapter cable