Bluetooth version : V3.0+EDR
– Operation distance : 10/20m
– Range of frequency : 2.4 to 2.4835GHz ISM band
– Sensitivity : -85dB Specification of MP3/FM
– PC Interface : USB 2.0
– Music format : MP3/WMA
– TF Card Support : 128M-64GB
– FM Frequency response : 87.5-108MHz
– Rechargable lithium battery : 250mAh Specification of Headphone
– Type : Stereo headphone with MIC
– Speaker :40mm
– Sensitivity : 115dB S.P.L at 1KHZ
– Impedance : 32 Ohm
– Frequency response : 20Hz – 20KHz
– Rated Power : 40mW
– Power Capability : 100mW
– Microphone unit : 4.5mmx2mm -58dB+/- 3dB
– Plug Type : 3.5mm stereo