Mobile telephone chatting free and relaxed in car. (Requires 3.5mm audio input in the car stereo)Turns your car audio system， regular home stereo system， Speakers and Headphones into Bluetooth enabled devices. Automatically connect back function：If completed Bluetooth pairing for the receiver and your cell phone in first time using， in next time using， just turn on the Bluetooth of the cell phone first， then turn on the Bluetooth receiver， it can be automatically paired. Music or call switching， free and relaxed. When the call comes， short press the function button to answer it in hands-free mode or long press the function button to reject the call. Super clear and flow conversation effect. Inner Li-Battery， longer working time， lower power consumption. Unique noise eliminating technology obtain more pure sound effect than Bluetooth 3.0/2.0 technology solution.You even can not hear any noise at all.Unique acoustic effect enhancing technology make you feel permeability and delicacy treble， fluidity and crisp alto， super powerful bass. Two-Link: can connect two Bluetooth devices at the same time. Description: *Zio Mini Bluetooth 4.0 Music Receiver is designed to provide a simple hands-free solution for answering and receiving phone calls while on the go. *Just simple operation， normal car speaker become hands-free Bluetooth speaker magically， portable for vehicle mounted systems. Features: *Easy Installation:Plug the receiver into your car AUX port or Home AV surrounding system with the 3.5mm Audio Adapter or Cable. *Exquisite product appearance， mini size， you can carry it in your pocket. *Compatible with all devices enabled with A2DP stereo Bluetooth. *Hands-free function， with Music， Volume and Playback Control. *With volume button / play&pause button， built-in microphone for phone call. *Play the Music of Your iPhone/iPod touch， cell phone wirelessly through your car speaker. Specifications: Bluetooth Version: V4.0 Frequency Range: 2.4GHz Output Power Category: Class2 Bluetooth Mode: HFP/HSP/A2DP/AVRCP Bluetooth Range: Up to 30 feet Charge time: 1.5 hours Play time: Up to 10 hours Package Detail: 1x Car Bluetooth4.0 Stereo Audio Music Receiver 1x 3.5mm Audio Cable 1x 3.5mm Audio Adapter 1x USB Cable 1x User Manual Warranty: Every ZIO Product includes an 12-month， worry-free Guarantee from date of original purchase. Support: We value our customers very much. Please give us the opportunity to help resolve your issues， in case you have concerns or problems with your order，Please contact us for support[customer-service@iziotech.com]. Emails answered within 1 business day.