4 in 1 wireless headphone
Item Number:SF878
Functions:
1,Wireless headphone
2,Headset with FM radio
3,Wired headphone
4,Wired headphone with microphone

Spes                                                           
*Transmitting frequency: 83MHZ                                  
*Receiving frequency: 83~108MHZ                             
*Receiving range: 30m                                           
*FM radio frequency: 88~108MHZ                                
*Power supply: AAA DC 1.5V batteries 2pcs x 2