?????KST-900ST Wireless Music Headphone with Control Volume¡¢ Support FM Radio / AUX / MP3 (Black)<br>Headphone<br>1. Wireless Earphone: Wireless reception from any electrical device with audio output such as full-channel TV sound¡¢ PC¡¢ game player¡¢ DVD player¡¢ VCD player¡¢ audio device¡¢ MP3 player¡¢ and CD player. <br>2. FM Radio: The headset can be used as FM radio separately <br>3. Wired Earphone: Equipped with audio cable¡¢ the receiver can be used as a wired earphone. <br>4. Reception Mode: FM <br>5. FM Frequency: 87.5-108Mhz for FM radio <br>6. Power Supply: Rechargeable Li-polymer battery <br>7. Distortion: 1%<br><br>Transmitter<br>1. Modulation Mode: FM <br>2. Emission Distance: 30m (with no inference) <br>3. Power Supply: DC 5V<br><br>Note<br>1. USB transmitter should keep away from adaptor. <br>2. Using the power bank or PC¡¢ TV USB port supply electricity is best. <br>3. Recharge the batteries if the receiver reception is poor. <br>4. If have large noise¡¢ please trun down the headphone volume and turn up the audio device volume. <br>5. If the headphone receive sound is distortion¡¢ please turn down the audio device volume.<br><br>Types: Headphone (no mic)Model: KST-900STDistortion: =Specifications of SUNSKY KST-900ST Wireless Music Headphone with Control Volume¡¢ Support FM Radio / AUX / MP3 (Black)<br>What's in the box:1 x Headphone<br>General Features:SKU	SU361ELAA3VFXSANMY-7681026	<br>Gender	Unisex	<br>Size (