JBL B20 Bluetooth Wireless Headset Stereo Super Bass FM MP3

• Specification Of wireless Wireless version：4.2 peration distance：1m
• Range of frequency：2.4 to 2.4835GHz ISM band Sensitivity：-85dB Specification of MP3 / FM PC interface：USB2.0 MASC format：MP3MM4 TF card support：1 28M-32GB
• FMfrequency response：87.5-108MHz
• Rechargeable lithium battery：250mAh
• Specification Of Headphone Type：stereo headphone with MIC 
• Speaker：Φ40mmSensitivity：1 1 5dB SPL at 1 KHz
• Impedance：3202 Frequency response：20HZ-20KHz Rated Power：40mW
• Power capability：100mW Cable Length：1。5mMicrophone Unit：4.5mmx2mm-58dB±3dB Plug Type：03.5mm stereo
• Feature Allow you to enjoy digital-quality music wirelessly and convert between music and phone calling mode freely
• Support TF card
• Support FM，can receive high-quality stereo radio
• Support Wireless stereo devices to receive A2DP stereo music from laptop computer，desk computer，tablet PC，iphone，blackberry，Wireless adapter，MP3 player or anyother device that supports Wireless stereo audio