General: bluetooth handsfree car kit,unit features:universal bluetooth handsfree car kit for all kind of bluetooth phone. (Compatible with all kinds of gsm / cdma / tdma / wcdma bluetooth phones.),Voice announcing for incoming phone number,changeable ring tones. (3 Ring sound options + 1 voice),digital noise and echo suppression system,full two ways (duplex) conversation,high powered amplifier and speaker,directional high sensitive microphone,voice dialling, redial and audio transfer function,automatic re-connection,easy set up and simple operation,provides the best sound clarity with little or no distortion. (Superior sound quality),surge prevention circuit,alternative power connection,remote controller function:talk button : used for accept, end, reject, redial, voice dialling,volume (+) button : for pairing standby mode and increasing the speaker volume,volume (-) button : for ring tone change and decreasing the speaker volume,green led light : for indication of bluetooth link status, green led light flashin : bluetooth pairing,red led light : for indication of the handsfree device operation,details on what included with your bluetooth handsfree car kit,this product ships within 3-5 business days