Specification of bluetooth :

- Bluetooth version : V3.0+EDR

- Operation distance : 10m

- 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

Feature

- Allow you to enjoy digital-quality music wirelessly and convert between music and phone calling made freely

- Support TF Card

- Support FM, can receive high-quality stereo radio

- Support bluetoothstereo devices to receive A2DP stereo music from laptop computer, desk computer, tablet PC, Iphone, Blackberry,bluetooth adapter, MP3 Player or anyother device that supports bluetooth stereo audio.