100%Brand New and high qualityBluetooth version: V2.1+EDRDistance: 10MFrequency range: ISM band 2.4-2.4835GHzSensitivity: -85dBMP3 and FM basic parameters Data interface: USB2.0 Music format: MP3/WMA Support TF Card range: 128M-32CB FM frequency range: 87.5-108.0MHz Polymer Li ion battery capacity: 350mAh Headset parameters: Speaker: 40MM Sensitivity S.P.L at 1kHz 115dB Impedance: 32 ohm Use frequency: 20HZ-20kHz Power: 40mW Receiver: 4mm*1.5mm -58dB Input interface: 3.5mm stereo