Bluetooth® Headphones with Handsfree 105 db

Sensibility: 108db +/- 3db
Impedance: 40 ohms
Frequency: 20Hz - 20KHz
Frequency range: 87 - 108MHz
Functions: MP3 player, FM stereo radio and headphones
Instant music sharing; connect one end of input to another player
Compatible with any music players and smartphones using 3.5mm standard input
With Playback FM Radio